diff --git a/plinth/locale/ar_SA/LC_MESSAGES/django.po b/plinth/locale/ar_SA/LC_MESSAGES/django.po
index 5c0ed09ca..22ad8994e 100644
--- a/plinth/locale/ar_SA/LC_MESSAGES/django.po
+++ b/plinth/locale/ar_SA/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2020-06-10 15:41+0000\n"
 "Last-Translator: aiman an <an1f3@hotmail.com>\n"
 "Language-Team: Arabic (Saudi Arabia) <https://hosted.weblate.org/projects/"
@@ -931,8 +931,9 @@ msgstr ""
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr ""
@@ -1220,7 +1221,7 @@ msgstr ""
 msgid "Hiding advanced apps and features"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1228,17 +1229,17 @@ msgid ""
 "who are otherwise unable connect to each other."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr ""
 
@@ -1258,7 +1259,7 @@ msgstr ""
 msgid "Use the following URLs to configure your communication server:"
 msgstr ""
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 msgid "Use the following shared authentication secret:"
 msgstr ""
 
@@ -1741,7 +1742,7 @@ msgid "ejabberd"
 msgstr ""
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr ""
 
@@ -2673,7 +2674,7 @@ msgstr ""
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -2683,28 +2684,56 @@ msgid ""
 "converse with users on all other Matrix servers via federation."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 msgid "Enable Public Registration"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
 "users to be able to use it."
 msgstr ""
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+msgid "Shared Authentication Secret"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr ""
@@ -2731,7 +2760,7 @@ msgid ""
 "least one domain to be able to use Matrix Synapse."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -2739,13 +2768,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -2753,14 +2782,6 @@ msgid ""
 "go to <a href=\"%(letsencrypt_url)s\">Let's Encrypt</a> to obtain one."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr ""
-
-#: plinth/modules/matrixsynapse/views.py:90
-msgid "Public registration disabled"
-msgstr ""
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
diff --git a/plinth/locale/bg/LC_MESSAGES/django.po b/plinth/locale/bg/LC_MESSAGES/django.po
index 0e176bdbe..40eb83f7e 100644
--- a/plinth/locale/bg/LC_MESSAGES/django.po
+++ b/plinth/locale/bg/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2021-01-18 12:32+0000\n"
 "Last-Translator: ikmaak <info@ikmaak.nl>\n"
 "Language-Team: Bulgarian <https://hosted.weblate.org/projects/freedombox/"
@@ -938,8 +938,9 @@ msgstr ""
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr ""
@@ -1227,7 +1228,7 @@ msgstr ""
 msgid "Hiding advanced apps and features"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1235,17 +1236,17 @@ msgid ""
 "who are otherwise unable connect to each other."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr ""
 
@@ -1265,7 +1266,7 @@ msgstr ""
 msgid "Use the following URLs to configure your communication server:"
 msgstr ""
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 msgid "Use the following shared authentication secret:"
 msgstr ""
 
@@ -1748,7 +1749,7 @@ msgid "ejabberd"
 msgstr ""
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr ""
 
@@ -2680,7 +2681,7 @@ msgstr ""
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -2690,28 +2691,56 @@ msgid ""
 "converse with users on all other Matrix servers via federation."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 msgid "Enable Public Registration"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
 "users to be able to use it."
 msgstr ""
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+msgid "Shared Authentication Secret"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr ""
@@ -2738,7 +2767,7 @@ msgid ""
 "least one domain to be able to use Matrix Synapse."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -2746,13 +2775,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -2760,14 +2789,6 @@ msgid ""
 "go to <a href=\"%(letsencrypt_url)s\">Let's Encrypt</a> to obtain one."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr ""
-
-#: plinth/modules/matrixsynapse/views.py:90
-msgid "Public registration disabled"
-msgstr ""
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
diff --git a/plinth/locale/bn/LC_MESSAGES/django.po b/plinth/locale/bn/LC_MESSAGES/django.po
index 6397d66c5..e17d3957c 100644
--- a/plinth/locale/bn/LC_MESSAGES/django.po
+++ b/plinth/locale/bn/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2021-02-01 18:42+0000\n"
 "Last-Translator: Oymate <dhruboadittya96@gmail.com>\n"
 "Language-Team: Bengali <https://hosted.weblate.org/projects/freedombox/"
@@ -930,8 +930,9 @@ msgstr ""
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr ""
@@ -1219,7 +1220,7 @@ msgstr ""
 msgid "Hiding advanced apps and features"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1227,17 +1228,17 @@ msgid ""
 "who are otherwise unable connect to each other."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr ""
 
@@ -1257,7 +1258,7 @@ msgstr ""
 msgid "Use the following URLs to configure your communication server:"
 msgstr ""
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 msgid "Use the following shared authentication secret:"
 msgstr ""
 
@@ -1741,7 +1742,7 @@ msgid "ejabberd"
 msgstr ""
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr ""
 
@@ -2673,7 +2674,7 @@ msgstr ""
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -2683,28 +2684,56 @@ msgid ""
 "converse with users on all other Matrix servers via federation."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 msgid "Enable Public Registration"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
 "users to be able to use it."
 msgstr ""
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+msgid "Shared Authentication Secret"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr ""
@@ -2731,7 +2760,7 @@ msgid ""
 "least one domain to be able to use Matrix Synapse."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -2739,13 +2768,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -2753,14 +2782,6 @@ msgid ""
 "go to <a href=\"%(letsencrypt_url)s\">Let's Encrypt</a> to obtain one."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr ""
-
-#: plinth/modules/matrixsynapse/views.py:90
-msgid "Public registration disabled"
-msgstr ""
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
diff --git a/plinth/locale/cs/LC_MESSAGES/django.po b/plinth/locale/cs/LC_MESSAGES/django.po
index 986897de1..bca53db94 100644
--- a/plinth/locale/cs/LC_MESSAGES/django.po
+++ b/plinth/locale/cs/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2021-01-25 11:32+0000\n"
 "Last-Translator: Milan <mobrcian@hotmail.com>\n"
 "Language-Team: Czech <https://hosted.weblate.org/projects/freedombox/"
@@ -1025,8 +1025,9 @@ msgstr ""
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr "Nastavení aktualizováno"
@@ -1360,7 +1361,7 @@ msgstr "Jsou zobrazovány pokročilé aplikace a funkce"
 msgid "Hiding advanced apps and features"
 msgstr "Jsou skryté pokročilé aplikace a funkce"
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1368,17 +1369,17 @@ msgid ""
 "who are otherwise unable connect to each other."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr ""
 
@@ -1398,7 +1399,7 @@ msgstr ""
 msgid "Use the following URLs to configure your communication server:"
 msgstr ""
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 #, fuzzy
 #| msgid "The following storage devices are in use:"
 msgid "Use the following shared authentication secret:"
@@ -1973,7 +1974,7 @@ msgid "ejabberd"
 msgstr "ejabberd"
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr "Chat server"
 
@@ -3083,7 +3084,7 @@ msgstr "Certifikát pro doménu {domain} úspěšně smazán"
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr "Nepodařilo se smazat certifikát pro doménu {domain}: {error}"
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -3100,30 +3101,22 @@ msgstr ""
 "čísla. Díky federování mohou uživatelé na daném  Matrix serveru komunikovat "
 "s uživateli všech ostatních Matrix serverů."
 
-#: plinth/modules/matrixsynapse/__init__.py:41
-#, fuzzy
-#| msgid ""
-#| "To communicate, you can use the <a href=\"https://matrix.org/docs/"
-#| "projects/\">available clients</a> for mobile, desktop and the web. <a "
-#| "href=\"https://riot.im/\">Riot</a> client is recommended."
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
-"Pro komunikaci jsou k dispozici <a href=\"https://matrix.org/docs/projects/"
-"\">klienti</a> pro mobilní zařízení, osobní počítače a web. Doporučujeme "
-"klienta<a href=\"https://riot.im/\">Riot</a>."
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr "Matrix Synapse"
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 msgid "Enable Public Registration"
 msgstr "Umožnit registraci veřejnosti"
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
@@ -3133,6 +3126,36 @@ msgstr ""
 "vytvořit účet na vašem Matrix serveru. Pokud chcete, aby službu mohli "
 "využívat pouze existující uživatelé systému, tuto funkci vypněte."
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+#, fuzzy
+#| msgid "Authentication Mode"
+msgid "Shared Authentication Secret"
+msgstr "Režim ověřování"
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr ""
@@ -3170,7 +3193,7 @@ msgstr ""
 "Nejsou k dispozici žádné domény. Abyste mohli používat Matrix Synapse <a "
 "href=\"%(config_url)s\">nastavte</a> alespoň jednu doménu."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -3182,7 +3205,7 @@ msgstr ""
 "%(domain_name)s</em>. Změna doménového názvu po úvodním nastavení není v "
 "současnosti podporována."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
@@ -3190,7 +3213,7 @@ msgstr ""
 "Když je zapnutá veřejná registrace, noví uživatelé mohou být registrování z "
 "libovolného klienta."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -3202,14 +3225,6 @@ msgstr ""
 "certifikát. Jděte na <a href=\"%(letsencrypt_url)s\">Let's Encrypt</a> a "
 "získejte takový."
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr "Registrace pro veřejnost otevřena"
-
-#: plinth/modules/matrixsynapse/views.py:90
-msgid "Public registration disabled"
-msgstr "Registrace pro veřejnost zavřena"
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
@@ -8514,6 +8529,26 @@ msgstr "%(percentage)s%% dokončeno"
 msgid "Gujarati"
 msgstr "gudžarátština"
 
+#, fuzzy
+#~| msgid ""
+#~| "To communicate, you can use the <a href=\"https://matrix.org/docs/"
+#~| "projects/\">available clients</a> for mobile, desktop and the web. <a "
+#~| "href=\"https://riot.im/\">Riot</a> client is recommended."
+#~ msgid ""
+#~ "To communicate, you can use the <a href=\"https://matrix.org/docs/"
+#~ "projects/\">available clients</a> for mobile, desktop and the web. <a "
+#~ "href=\"https://element.io/\">Element</a> client is recommended."
+#~ msgstr ""
+#~ "Pro komunikaci jsou k dispozici <a href=\"https://matrix.org/docs/"
+#~ "projects/\">klienti</a> pro mobilní zařízení, osobní počítače a web. "
+#~ "Doporučujeme klienta<a href=\"https://riot.im/\">Riot</a>."
+
+#~ msgid "Public registration enabled"
+#~ msgstr "Registrace pro veřejnost otevřena"
+
+#~ msgid "Public registration disabled"
+#~ msgstr "Registrace pro veřejnost zavřena"
+
 #, python-brace-format
 #~ msgid ""
 #~ "\"Automatic\" method will make {box_name} acquire configuration from this "
diff --git a/plinth/locale/da/LC_MESSAGES/django.po b/plinth/locale/da/LC_MESSAGES/django.po
index e1197a684..21df2d283 100644
--- a/plinth/locale/da/LC_MESSAGES/django.po
+++ b/plinth/locale/da/LC_MESSAGES/django.po
@@ -9,7 +9,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: FreedomBox UI\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2021-01-18 12:32+0000\n"
 "Last-Translator: ikmaak <info@ikmaak.nl>\n"
 "Language-Team: Danish <https://hosted.weblate.org/projects/freedombox/"
@@ -1002,8 +1002,9 @@ msgstr "Opfrisk IP-adresse og domæner"
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr "Konfiguration opdateret"
@@ -1333,7 +1334,7 @@ msgstr "Viser avancerede applikationer og funktionalitet"
 msgid "Hiding advanced apps and features"
 msgstr "Skjuler avancerede applikationer og funktionalitet"
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1345,7 +1346,7 @@ msgstr ""
 "WebRTC, SIP og andre kommunikationsservere kan bruge dette til at oprette et "
 "opkald mellem parter der ellers ikke kan oprette forbindelse til hinanden."
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
@@ -1353,11 +1354,11 @@ msgstr ""
 "Den er ikke beregnet til at blive anvendt direkte af brugerne. Servere såsom "
 "matrix-synapse skal konfigureres med detaljerne som er angivet her."
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr "Coturn"
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr "VoIP-hjælper"
 
@@ -1380,7 +1381,7 @@ msgid "Use the following URLs to configure your communication server:"
 msgstr ""
 "Brug de følgende webadresser til at konfigurere din kommunikationsserver:"
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 msgid "Use the following shared authentication secret:"
 msgstr "Brug den følgende delte autentifikationshemmelighed:"
 
@@ -1934,7 +1935,7 @@ msgid "ejabberd"
 msgstr "ejabberd"
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr "Chatserver"
 
@@ -3060,7 +3061,7 @@ msgstr "Certifikatet for domænet {domain} blev trukket tilbage"
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr "Fejl ved tilbagetrækning af certifikatet for domænet {domain}: {error}"
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -3070,32 +3071,62 @@ msgid ""
 "converse with users on all other Matrix servers via federation."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 #, fuzzy
 #| msgid "Chat Server (XMPP)"
 msgid "Matrix Synapse"
 msgstr "Chat-server (XMPP)"
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 #, fuzzy
 #| msgid "Enable application"
 msgid "Enable Public Registration"
 msgstr "Aktiver applikation"
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
 "users to be able to use it."
 msgstr ""
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+#, fuzzy
+#| msgid "Authentication Mode"
+msgid "Shared Authentication Secret"
+msgstr "Autentificeringstilstand"
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr ""
@@ -3122,7 +3153,7 @@ msgid ""
 "least one domain to be able to use Matrix Synapse."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, fuzzy, python-format
 #| msgid ""
 #| "Your XMPP server domain is set to <b>%(domainname)s</b>. User IDs will "
@@ -3137,13 +3168,13 @@ msgstr ""
 "vil se ud som <i>brugernavn@%(domainname)s</i>. Du kan konfigurere systemets "
 "domæne på <a href=\"%(index_url)s\">Konfigurer</a> siden."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -3151,18 +3182,6 @@ msgid ""
 "go to <a href=\"%(letsencrypt_url)s\">Let's Encrypt</a> to obtain one."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/views.py:85
-#, fuzzy
-#| msgid "Application enabled"
-msgid "Public registration enabled"
-msgstr "Applikation aktiveret"
-
-#: plinth/modules/matrixsynapse/views.py:90
-#, fuzzy
-#| msgid "Application disabled"
-msgid "Public registration disabled"
-msgstr "Applikation deaktiveret"
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
@@ -8417,6 +8436,16 @@ msgstr "%(percentage)s%% færdig"
 msgid "Gujarati"
 msgstr ""
 
+#, fuzzy
+#~| msgid "Application enabled"
+#~ msgid "Public registration enabled"
+#~ msgstr "Applikation aktiveret"
+
+#, fuzzy
+#~| msgid "Application disabled"
+#~ msgid "Public registration disabled"
+#~ msgstr "Applikation deaktiveret"
+
 #, python-brace-format
 #~ msgid ""
 #~ "\"Automatic\" method will make {box_name} acquire configuration from this "
diff --git a/plinth/locale/de/LC_MESSAGES/django.po b/plinth/locale/de/LC_MESSAGES/django.po
index f875cbab4..046ca3453 100644
--- a/plinth/locale/de/LC_MESSAGES/django.po
+++ b/plinth/locale/de/LC_MESSAGES/django.po
@@ -9,7 +9,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: FreedomBox UI\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2021-02-19 15:50+0000\n"
 "Last-Translator: Dietmar <sagen@permondes.de>\n"
 "Language-Team: German <https://hosted.weblate.org/projects/freedombox/"
@@ -1024,8 +1024,9 @@ msgstr "IP-Adresse und Domänen aktualisieren"
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr "Konfiguration aktualisiert"
@@ -1362,7 +1363,7 @@ msgstr "Zeige erweiterte Anwendungen und Funktionen an"
 msgid "Hiding advanced apps and features"
 msgstr "Ausblenden von erweiterten Apps und Funktionen"
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1375,7 +1376,7 @@ msgstr ""
 "verwenden, um eine Verbindung zwischen Parteien herzustellen, die sich sonst "
 "nicht miteinander verbinden können."
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
@@ -1383,11 +1384,11 @@ msgstr ""
 "Sie ist nicht für die direkte Nutzung durch Benutzer gedacht. Server wie "
 "Matrix-Synapse müssen mit den hier gemachten Angaben konfiguriert werden."
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr "Coturn"
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr "VoIP-Helfer"
 
@@ -1411,7 +1412,7 @@ msgstr ""
 "Verwenden Sie die folgenden URLs zur Konfiguration Ihres "
 "Kommunikationsservers:"
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 msgid "Use the following shared authentication secret:"
 msgstr "Verwenden Sie das folgende geteilte Authentifizierungsgeheimnis:"
 
@@ -1974,7 +1975,7 @@ msgid "ejabberd"
 msgstr "ejabberd"
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr "Chatserver"
 
@@ -3078,7 +3079,7 @@ msgstr "Zertifikat erfolgreich widerrufen für Domain {domain}"
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr "Fehler beim Widerrufen des Zertifikats für Domain {domain}: {error}"
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -3096,26 +3097,22 @@ msgstr ""
 "einem bestimmten Matrix Server können dank Föderation zwischen den Servern "
 "mit Nutzerkonten auf einem beliebigen anderen Server kommunizieren."
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
-"Zur Kommunikation nutzen Sie eine der <a href=\"https://matrix.org/docs/"
-"projects/\">verfügbaren Clientanwendungen</a> für ihr Handy, Desktop oder im "
-"Web. Die Clientanwendung <a href=\"https://element.io/\">Element</a> wird "
-"empfohlen."
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr "Matrix Synapse"
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 msgid "Enable Public Registration"
 msgstr "Öffentliche Registrierung aktivieren"
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
@@ -3126,6 +3123,36 @@ msgstr ""
 "Deaktivieren Sie diese Option, wenn Sie ausschließlich bereits existierende "
 "Benutzer zulassen möchten."
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+#, fuzzy
+#| msgid "Authentication Mode"
+msgid "Shared Authentication Secret"
+msgstr "Authentifizierungsmodus"
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr "Element"
@@ -3163,7 +3190,7 @@ msgstr ""
 "\">Konfigurieren</a> Sie mindestens eine Domain, um Matrix Synapse nutzen zu "
 "können."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -3174,7 +3201,7 @@ msgstr ""
 "IDs erscheinen als <em>Nutzername:%(domain_name)s</em>. Änderungen der "
 "Domain nach der ersten Konfiguration werden derzeit nicht unterstützt."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
@@ -3182,7 +3209,7 @@ msgstr ""
 "Neue Nutzer können von beliebigen Geräten registriert werden, wenn "
 "öffentliche Registrierung aktiviert ist."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -3194,14 +3221,6 @@ msgstr ""
 "Zertifikat. Bitte gehen Sie zu <a href=\"%(letsencrypt_url)s\">Let's "
 "Encrypt</a>, um eines zu beziehen."
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr "Öffentliche Registrierung aktiviert"
-
-#: plinth/modules/matrixsynapse/views.py:90
-msgid "Public registration disabled"
-msgstr "Öffentliche Registrierung deaktiviert"
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
@@ -8497,6 +8516,22 @@ msgstr "%(percentage)s %% abgeschlossen"
 msgid "Gujarati"
 msgstr "Gujarati"
 
+#~ msgid ""
+#~ "To communicate, you can use the <a href=\"https://matrix.org/docs/"
+#~ "projects/\">available clients</a> for mobile, desktop and the web. <a "
+#~ "href=\"https://element.io/\">Element</a> client is recommended."
+#~ msgstr ""
+#~ "Zur Kommunikation nutzen Sie eine der <a href=\"https://matrix.org/docs/"
+#~ "projects/\">verfügbaren Clientanwendungen</a> für ihr Handy, Desktop oder "
+#~ "im Web. Die Clientanwendung <a href=\"https://element.io/\">Element</a> "
+#~ "wird empfohlen."
+
+#~ msgid "Public registration enabled"
+#~ msgstr "Öffentliche Registrierung aktiviert"
+
+#~ msgid "Public registration disabled"
+#~ msgstr "Öffentliche Registrierung deaktiviert"
+
 #, python-brace-format
 #~ msgid ""
 #~ "\"Automatic\" method will make {box_name} acquire configuration from this "
diff --git a/plinth/locale/django.pot b/plinth/locale/django.pot
index 66df4d940..228931ab7 100644
--- a/plinth/locale/django.pot
+++ b/plinth/locale/django.pot
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -928,8 +928,9 @@ msgstr ""
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr ""
@@ -1217,7 +1218,7 @@ msgstr ""
 msgid "Hiding advanced apps and features"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1225,17 +1226,17 @@ msgid ""
 "who are otherwise unable connect to each other."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr ""
 
@@ -1255,7 +1256,7 @@ msgstr ""
 msgid "Use the following URLs to configure your communication server:"
 msgstr ""
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 msgid "Use the following shared authentication secret:"
 msgstr ""
 
@@ -1738,7 +1739,7 @@ msgid "ejabberd"
 msgstr ""
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr ""
 
@@ -2670,7 +2671,7 @@ msgstr ""
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -2680,28 +2681,56 @@ msgid ""
 "converse with users on all other Matrix servers via federation."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 msgid "Enable Public Registration"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
 "users to be able to use it."
 msgstr ""
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+msgid "Shared Authentication Secret"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr ""
@@ -2728,7 +2757,7 @@ msgid ""
 "least one domain to be able to use Matrix Synapse."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -2736,13 +2765,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -2750,14 +2779,6 @@ msgid ""
 "go to <a href=\"%(letsencrypt_url)s\">Let's Encrypt</a> to obtain one."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr ""
-
-#: plinth/modules/matrixsynapse/views.py:90
-msgid "Public registration disabled"
-msgstr ""
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
diff --git a/plinth/locale/el/LC_MESSAGES/django.po b/plinth/locale/el/LC_MESSAGES/django.po
index 71be22323..a5d51c33b 100644
--- a/plinth/locale/el/LC_MESSAGES/django.po
+++ b/plinth/locale/el/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2021-02-09 23:50+0000\n"
 "Last-Translator: Michalis <michalisntovas@yahoo.gr>\n"
 "Language-Team: Greek <https://hosted.weblate.org/projects/freedombox/"
@@ -1043,8 +1043,9 @@ msgstr ""
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr "Η ρύθμιση παραμέτρων Ενημερώθηκε"
@@ -1384,7 +1385,7 @@ msgstr "Εμφανίζονται προηγμένες εφαρμογές και
 msgid "Hiding advanced apps and features"
 msgstr "Απόκρυψη προηγμένων εφαρμογών και χαρακτηριστικών"
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1392,17 +1393,17 @@ msgid ""
 "who are otherwise unable connect to each other."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr ""
 
@@ -1424,7 +1425,7 @@ msgstr ""
 msgid "Use the following URLs to configure your communication server:"
 msgstr ""
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 #, fuzzy
 #| msgid "The following storage devices are in use:"
 msgid "Use the following shared authentication secret:"
@@ -2000,7 +2001,7 @@ msgid "ejabberd"
 msgstr "ejabberd"
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr "Διακομιστής συνομιλίας"
 
@@ -3131,7 +3132,7 @@ msgstr "Το πιστοποιητικό διαγράφηκε επιτυχώς γ
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr "Αποτυχία διαγραφής πιστοποιητικού για το όνομα {domain}: {error}"
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -3149,31 +3150,22 @@ msgstr ""
 "να συνομιλήσουν με τους χρήστες σε όλες τις άλλες διακομιστές Matrix μέσω "
 "ομοσπονδίας."
 
-#: plinth/modules/matrixsynapse/__init__.py:41
-#, fuzzy
-#| msgid ""
-#| "To communicate, you can use the <a href=\"https://matrix.org/docs/"
-#| "projects/\">available clients</a> for mobile, desktop and the web. <a "
-#| "href=\"https://riot.im/\">Riot</a> client is recommended."
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
-"Για να επικοινωνήσετε, μπορείτε να χρησιμοποιήσετε τους <a href=\"https://"
-"matrix.org/docs/projects/\">διαθέσιμους πελάτες</a> για το κινητό, τον "
-"υπολογιστή και τον περιηγητή διαδικτύου. O πελάτης <a href=\"https://riot.im/"
-"\">riot</a> συνιστάται."
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr "Matrix Synapse"
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 msgid "Enable Public Registration"
 msgstr "Ενεργοποίηση εγγραφών νέων χρηστών"
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
@@ -3184,6 +3176,36 @@ msgstr ""
 "Απενεργοποιήστε αυτήν την επιλογή, εάν θέλετε μόνο οι υπάρχοντες χρήστες να "
 "μπορούν να χρησιμοποιήσουν το διακομιστή σας."
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+#, fuzzy
+#| msgid "Authentication Mode"
+msgid "Shared Authentication Secret"
+msgstr "Λειτουργία ελέγχου ταυτότητας"
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr ""
@@ -3223,7 +3245,7 @@ msgstr ""
 "Διαμορφώστε </a> τουλάχιστον ένα όνομα για να μπορέσετε να χρησιμοποιήσετε "
 "το Matrix Synapse."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -3235,7 +3257,7 @@ msgstr ""
 "%(domain_name)s</em>. Αλλαγή του ονόματος διαδικτύου δεν υποστηρίζεται μετά "
 "την αρχική εγκατάσταση."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
@@ -3243,7 +3265,7 @@ msgstr ""
 "Οι νέοι χρήστες μπορούν να καταχωρούνται από οποιονδήποτε υπολογιστή-πελάτη, "
 "εάν είναι ενεργοποιημένη η δημόσια εγγραφή."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -3255,14 +3277,6 @@ msgstr ""
 "TLS πιστοποιητικό. Μεταβείτε στη διεύθυνση <a href=\"%(letsencrypt_url)s\"> "
 "Lets Encrypt </a> για να αποκτήσετε ένα."
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr "Η δημόσια εγγραφή ενεργοποιήθηκε"
-
-#: plinth/modules/matrixsynapse/views.py:90
-msgid "Public registration disabled"
-msgstr "Η δημόσια εγγραφή απενεργοποιήθηκε"
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
@@ -8635,6 +8649,27 @@ msgstr "ολοκληρώθηκε το %(percentage)s%%"
 msgid "Gujarati"
 msgstr "Gujarati"
 
+#, fuzzy
+#~| msgid ""
+#~| "To communicate, you can use the <a href=\"https://matrix.org/docs/"
+#~| "projects/\">available clients</a> for mobile, desktop and the web. <a "
+#~| "href=\"https://riot.im/\">Riot</a> client is recommended."
+#~ msgid ""
+#~ "To communicate, you can use the <a href=\"https://matrix.org/docs/"
+#~ "projects/\">available clients</a> for mobile, desktop and the web. <a "
+#~ "href=\"https://element.io/\">Element</a> client is recommended."
+#~ msgstr ""
+#~ "Για να επικοινωνήσετε, μπορείτε να χρησιμοποιήσετε τους <a href=\"https://"
+#~ "matrix.org/docs/projects/\">διαθέσιμους πελάτες</a> για το κινητό, τον "
+#~ "υπολογιστή και τον περιηγητή διαδικτύου. O πελάτης <a href=\"https://riot."
+#~ "im/\">riot</a> συνιστάται."
+
+#~ msgid "Public registration enabled"
+#~ msgstr "Η δημόσια εγγραφή ενεργοποιήθηκε"
+
+#~ msgid "Public registration disabled"
+#~ msgstr "Η δημόσια εγγραφή απενεργοποιήθηκε"
+
 #, python-brace-format
 #~ msgid ""
 #~ "\"Automatic\" method will make {box_name} acquire configuration from this "
diff --git a/plinth/locale/es/LC_MESSAGES/django.po b/plinth/locale/es/LC_MESSAGES/django.po
index 819f06bea..9f63b79a7 100644
--- a/plinth/locale/es/LC_MESSAGES/django.po
+++ b/plinth/locale/es/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2021-02-11 18:50+0000\n"
 "Last-Translator: Fioddor Superconcentrado <fioddor@gmail.com>\n"
 "Language-Team: Spanish <https://hosted.weblate.org/projects/freedombox/"
@@ -1013,8 +1013,9 @@ msgstr "Actualizar direcciones IP y dominios"
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr "Configuración actualizada"
@@ -1347,7 +1348,7 @@ msgstr "Mostrando aplicaciones y funciones avanzadas"
 msgid "Hiding advanced apps and features"
 msgstr "Ocultando aplicaciones y funciones avanzadas"
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1359,7 +1360,7 @@ msgstr ""
 "SIP y de otros tipos pueden usarlo para establecer llamadas entre partes que "
 "no tienen otra alternativa disponible."
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
@@ -1368,11 +1369,11 @@ msgstr ""
 "servidores como matrix-synapse tienen que configurarse con los detalles que "
 "se proporcionan aquí."
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr "Coturn"
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr "Asistente VoIP"
 
@@ -1394,7 +1395,7 @@ msgstr ""
 msgid "Use the following URLs to configure your communication server:"
 msgstr "Use las siguientes URL para configurar su servidor de comunicación:"
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 msgid "Use the following shared authentication secret:"
 msgstr "Use la clave compartida siguiente:"
 
@@ -1951,7 +1952,7 @@ msgid "ejabberd"
 msgstr "ejabberd"
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr "Servidor de Chat"
 
@@ -3043,7 +3044,7 @@ msgstr "El certificado para el dominio {domain} ha sido eliminado con éxito"
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr "Falló la eliminación del certificado para el dominio {domain}: {error}"
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -3060,25 +3061,22 @@ msgstr ""
 "funcionar. La federación de los servidores permite que las/os usuarias/os de "
 "un servidor Matrix contacten con los de otro servidor."
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
-"Para comunicarse puede usar los <a href=\"https://matrix.org/docs/projects/"
-"\">clientes disponibles</a> para móvil, escritorio y la web. Se recomienda "
-"el cliente <a href=\"https://element.io/\">Element</a>."
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr "Matrix Synapse"
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 msgid "Enable Public Registration"
 msgstr "Activar el registro público"
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
@@ -3088,6 +3086,36 @@ msgstr ""
 "crear una cuenta nueva en su servidor Matrix. Desactive esta opción si "
 "prefiere que solo las/los usuarias/os existentes puedan usarla."
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+#, fuzzy
+#| msgid "Authentication Mode"
+msgid "Shared Authentication Secret"
+msgstr "Modo de autenticación"
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr "Element"
@@ -3125,7 +3153,7 @@ msgstr ""
 "No hay dominios disponibles. <a href=\"%(config_url)s\">Configure</a> al "
 "menos un dominio para poder usar Matrix/Synapse."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -3136,7 +3164,7 @@ msgstr ""
 "usuaria/o será parecida a <em>@username:%(domain_name)s</em>. Actualmente no "
 "se puede cambiar el nombre de dominio una vez ha sido configurado."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
@@ -3144,7 +3172,7 @@ msgstr ""
 "Si el registro público está habilitado se pueden registrar nuevas/os "
 "usuarias/os desde cualquier cliente."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -3156,14 +3184,6 @@ msgstr ""
 "TLS válido. Vaya a <a href=\"%(letsencrypt_url)s\">Let's Encrypt</a> para "
 "obtener uno."
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr "Registro público activado"
-
-#: plinth/modules/matrixsynapse/views.py:90
-msgid "Public registration disabled"
-msgstr "Registro público desactivado"
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
@@ -8363,6 +8383,21 @@ msgstr "%(percentage)s%% completado"
 msgid "Gujarati"
 msgstr "Gujarati"
 
+#~ msgid ""
+#~ "To communicate, you can use the <a href=\"https://matrix.org/docs/"
+#~ "projects/\">available clients</a> for mobile, desktop and the web. <a "
+#~ "href=\"https://element.io/\">Element</a> client is recommended."
+#~ msgstr ""
+#~ "Para comunicarse puede usar los <a href=\"https://matrix.org/docs/"
+#~ "projects/\">clientes disponibles</a> para móvil, escritorio y la web. Se "
+#~ "recomienda el cliente <a href=\"https://element.io/\">Element</a>."
+
+#~ msgid "Public registration enabled"
+#~ msgstr "Registro público activado"
+
+#~ msgid "Public registration disabled"
+#~ msgstr "Registro público desactivado"
+
 #, python-brace-format
 #~ msgid ""
 #~ "\"Automatic\" method will make {box_name} acquire configuration from this "
diff --git a/plinth/locale/fa/LC_MESSAGES/django.po b/plinth/locale/fa/LC_MESSAGES/django.po
index 97d130849..bbfd5a183 100644
--- a/plinth/locale/fa/LC_MESSAGES/django.po
+++ b/plinth/locale/fa/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2021-01-18 12:32+0000\n"
 "Last-Translator: ikmaak <info@ikmaak.nl>\n"
 "Language-Team: Persian <https://hosted.weblate.org/projects/freedombox/"
@@ -1028,8 +1028,9 @@ msgstr ""
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr "پیکربندی به‌روز شد"
@@ -1348,7 +1349,7 @@ msgstr ""
 msgid "Hiding advanced apps and features"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1356,17 +1357,17 @@ msgid ""
 "who are otherwise unable connect to each other."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr ""
 
@@ -1388,7 +1389,7 @@ msgstr ""
 msgid "Use the following URLs to configure your communication server:"
 msgstr ""
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 #, fuzzy
 #| msgid "The following disks are in use:"
 msgid "Use the following shared authentication secret:"
@@ -1949,7 +1950,7 @@ msgid "ejabberd"
 msgstr ""
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 #, fuzzy
 #| msgid "Web Server"
 msgid "Chat Server"
@@ -3025,7 +3026,7 @@ msgstr "گواهی دامنهٔ {domain} با موفقیت باطل شد"
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr "باطل‌کردن گواهی دامنهٔ {domain} شکست خورد: {error}"
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -3035,29 +3036,59 @@ msgid ""
 "converse with users on all other Matrix servers via federation."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 #, fuzzy
 msgid "Enable Public Registration"
 msgstr "فعال‌سازی برنامه"
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
 "users to be able to use it."
 msgstr ""
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+#, fuzzy
+#| msgid "Authentication Mode"
+msgid "Shared Authentication Secret"
+msgstr "حالت تأیید هویت"
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr ""
@@ -3084,7 +3115,7 @@ msgid ""
 "least one domain to be able to use Matrix Synapse."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -3092,13 +3123,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -3106,15 +3137,6 @@ msgid ""
 "go to <a href=\"%(letsencrypt_url)s\">Let's Encrypt</a> to obtain one."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr ""
-
-#: plinth/modules/matrixsynapse/views.py:90
-#, fuzzy
-msgid "Public registration disabled"
-msgstr "برنامه نصب شد."
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
@@ -8023,6 +8045,10 @@ msgstr ""
 msgid "Gujarati"
 msgstr ""
 
+#, fuzzy
+#~ msgid "Public registration disabled"
+#~ msgstr "برنامه نصب شد."
+
 #, python-brace-format
 #~ msgid ""
 #~ "\"Automatic\" method will make {box_name} acquire configuration from this "
diff --git a/plinth/locale/fake/LC_MESSAGES/django.po b/plinth/locale/fake/LC_MESSAGES/django.po
index effd43c8c..88a197f3b 100644
--- a/plinth/locale/fake/LC_MESSAGES/django.po
+++ b/plinth/locale/fake/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Plinth 0.6\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2016-01-31 22:24+0530\n"
 "Last-Translator: Sunil Mohan Adapa <sunil@medhas.org>\n"
 "Language-Team: Plinth Developers <freedombox-discuss@lists.alioth.debian."
@@ -1069,8 +1069,9 @@ msgstr ""
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr "CONFIGURATION UPDATED"
@@ -1397,7 +1398,7 @@ msgstr ""
 msgid "Hiding advanced apps and features"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1405,17 +1406,17 @@ msgid ""
 "who are otherwise unable connect to each other."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr ""
 
@@ -1437,7 +1438,7 @@ msgstr ""
 msgid "Use the following URLs to configure your communication server:"
 msgstr ""
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 #, fuzzy
 #| msgid "The following is the current status:"
 msgid "Use the following shared authentication secret:"
@@ -2070,7 +2071,7 @@ msgid "ejabberd"
 msgstr ""
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 #, fuzzy
 #| msgid "Web Server"
 msgid "Chat Server"
@@ -3172,7 +3173,7 @@ msgstr "CERTIFICATE SUCCESSFULLY REVOKED FOR DOMAIN {domain}"
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr "FAILED TO REVOKE CERTIFICATE FOR DOMAIN {domain}: {error}"
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -3182,32 +3183,62 @@ msgid ""
 "converse with users on all other Matrix servers via federation."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 #, fuzzy
 #| msgid "Chat Server (XMPP)"
 msgid "Matrix Synapse"
 msgstr "CHAT SERVER (XMPP)"
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 #, fuzzy
 #| msgid "Applications"
 msgid "Enable Public Registration"
 msgstr "APPLICATIONS"
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
 "users to be able to use it."
 msgstr ""
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+#, fuzzy
+#| msgid "Authentication Mode"
+msgid "Shared Authentication Secret"
+msgstr "AUTHENTICATION MODE"
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr ""
@@ -3234,7 +3265,7 @@ msgid ""
 "least one domain to be able to use Matrix Synapse."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, fuzzy, python-format
 #| msgid ""
 #| "Your XMPP server domain is set to <b>%(domainname)s</b>. User IDs will "
@@ -3249,13 +3280,13 @@ msgstr ""
 "LIKE <i>USERNAME@%(domainname)s</i>. YOU CAN SETUP YOUR DOMAIN ON THE SYSTEM "
 "<a href=\"%(index_url)s\">CONFIGURE</a> PAGE."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -3263,18 +3294,6 @@ msgid ""
 "go to <a href=\"%(letsencrypt_url)s\">Let's Encrypt</a> to obtain one."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/views.py:85
-#, fuzzy
-#| msgid "Applications"
-msgid "Public registration enabled"
-msgstr "APPLICATIONS"
-
-#: plinth/modules/matrixsynapse/views.py:90
-#, fuzzy
-#| msgid "Applications"
-msgid "Public registration disabled"
-msgstr "APPLICATIONS"
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
@@ -8590,6 +8609,16 @@ msgstr "%(percentage)s%% COMPLETE"
 msgid "Gujarati"
 msgstr ""
 
+#, fuzzy
+#~| msgid "Applications"
+#~ msgid "Public registration enabled"
+#~ msgstr "APPLICATIONS"
+
+#, fuzzy
+#~| msgid "Applications"
+#~ msgid "Public registration disabled"
+#~ msgstr "APPLICATIONS"
+
 #, fuzzy
 #~| msgid "Manual"
 #~ msgctxt "Not automatically"
diff --git a/plinth/locale/fr/LC_MESSAGES/django.po b/plinth/locale/fr/LC_MESSAGES/django.po
index e85dad4da..55077f493 100644
--- a/plinth/locale/fr/LC_MESSAGES/django.po
+++ b/plinth/locale/fr/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: FreedomBox UI\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2021-02-16 04:50+0000\n"
 "Last-Translator: Coucouf <coucouf@coucouf.fr>\n"
 "Language-Team: French <https://hosted.weblate.org/projects/freedombox/"
@@ -1022,8 +1022,9 @@ msgstr "Rafraîchir l’adresse IP et les domaines"
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr "Configuration mise à jour"
@@ -1171,9 +1172,9 @@ msgstr ""
 "Cockpit peut être utilisé pour des opérations avancées sur le stockage "
 "telles que le partitionnement de disques et la gestion de grappes de disques "
 "RAID. Il peut aussi être utilisé pour l’ouverture de ports personnalisés sur "
-"le pare-feu, ainsi que les opérations réseau avancées telles que l’"
-"agrégation de liens (« bonding »), la création de ponts (« bridging ») et la "
-"gestion de réseaux virtuels VLAN."
+"le pare-feu, ainsi que les opérations réseau avancées telles que "
+"l’agrégation de liens (« bonding »), la création de ponts (« bridging ») et "
+"la gestion de réseaux virtuels VLAN."
 
 #: plinth/modules/cockpit/__init__.py:43
 #, python-brace-format
@@ -1367,7 +1368,7 @@ msgstr "Les applications et fonctionnalités avancées seront affichées"
 msgid "Hiding advanced apps and features"
 msgstr "Les applications et les fonctionnalités avancées seront masquées"
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1380,7 +1381,7 @@ msgstr ""
 "l’utiliser afin d'établir un appel entre plusieurs parties qui n’auraient "
 "pas pu se connecter entre elles autrement."
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
@@ -1389,11 +1390,11 @@ msgstr ""
 "Les serveurs du type matrix-synapse nécessitent d’être configurés avec les "
 "détails fournis ici."
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr "Coturn"
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr "Assistant de VoIP"
 
@@ -1417,7 +1418,7 @@ msgstr ""
 "Veuillez utiliser l’URL suivante pour configurer votre serveur de "
 "communication :"
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 msgid "Use the following shared authentication secret:"
 msgstr "Veuillez utiliser les secrets d’authentification partagés suivants :"
 
@@ -1990,7 +1991,7 @@ msgid "ejabberd"
 msgstr "ejabberd"
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr "Serveur de discussion"
 
@@ -3106,7 +3107,7 @@ msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr ""
 "Échec de la suppression du certificat pour le domaine {domain} : {error}"
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -3124,25 +3125,22 @@ msgstr ""
 "un serveur Matrix donné peuvent converser avec des utilisateurs sur tous les "
 "autres serveurs Matrix grâce la fédération."
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
-"Pour communiquer, vous pouvez utiliser un des <a href=\"https://matrix.org/"
-"docs/projects/\">clients disponibles</a> pour mobile, ordinateur de bureau "
-"et web. Le client <a href=\"https://element.io/\">Element</a> est recommandé."
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr "Matrix Synapse"
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 msgid "Enable Public Registration"
 msgstr "Activer l’inscription publique"
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
@@ -3152,6 +3150,36 @@ msgstr ""
 "pourra créer un nouveau compte sur votre serveur Matrix. Désactivez-la si "
 "vous souhaitez que seuls les utilisateurs existants puissent se connecter."
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+#, fuzzy
+#| msgid "Authentication Mode"
+msgid "Shared Authentication Secret"
+msgstr "Mode Authentification"
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr "Element"
@@ -3188,7 +3216,7 @@ msgstr ""
 "Aucun domaine disponible. <a href=\"%(config_url)s\"> Configurez</a> au "
 "moins un domaine pour pouvoir utiliser Matrix Synapse."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -3200,7 +3228,7 @@ msgstr ""
 "em>. Le changement du nom de domaine après l’installation initiale n’est "
 "actuellement pas supporté."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
@@ -3208,7 +3236,7 @@ msgstr ""
 "De nouveaux utilisateurs peuvent créer un compte depuis n’importe quel "
 "client si l’inscription publique est activée."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -3220,14 +3248,6 @@ msgstr ""
 "valide. Rendez-vous sur <a href=\"%(letsencrypt_url)s\">Let’s Encrypt</a> "
 "pour en obtenir un."
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr "Inscription publique activée"
-
-#: plinth/modules/matrixsynapse/views.py:90
-msgid "Public registration disabled"
-msgstr "Inscription publique désactivée"
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
@@ -8119,8 +8139,8 @@ msgid ""
 "Zoph. For additional users, accounts must be created both in {box_name} and "
 "in Zoph with the same user name."
 msgstr ""
-"L’utilisateur {box_name} qui configure Zoph deviendra également l’"
-"administrateur Zoph. Pour ajouter des utilisateurs ceux-ci doivent être "
+"L’utilisateur {box_name} qui configure Zoph deviendra également "
+"l’administrateur Zoph. Pour ajouter des utilisateurs ceux-ci doivent être "
 "créés à la fois sur la {box_name} et dans Zoph avec le même identifiant."
 
 #: plinth/modules/zoph/__init__.py:62 plinth/modules/zoph/manifest.py:6
@@ -8552,6 +8572,22 @@ msgstr "%(percentage)s%% effectué"
 msgid "Gujarati"
 msgstr "Gujarati"
 
+#~ msgid ""
+#~ "To communicate, you can use the <a href=\"https://matrix.org/docs/"
+#~ "projects/\">available clients</a> for mobile, desktop and the web. <a "
+#~ "href=\"https://element.io/\">Element</a> client is recommended."
+#~ msgstr ""
+#~ "Pour communiquer, vous pouvez utiliser un des <a href=\"https://matrix."
+#~ "org/docs/projects/\">clients disponibles</a> pour mobile, ordinateur de "
+#~ "bureau et web. Le client <a href=\"https://element.io/\">Element</a> est "
+#~ "recommandé."
+
+#~ msgid "Public registration enabled"
+#~ msgstr "Inscription publique activée"
+
+#~ msgid "Public registration disabled"
+#~ msgstr "Inscription publique désactivée"
+
 #, python-brace-format
 #~ msgid ""
 #~ "\"Automatic\" method will make {box_name} acquire configuration from this "
diff --git a/plinth/locale/gl/LC_MESSAGES/django.po b/plinth/locale/gl/LC_MESSAGES/django.po
index 7f02102da..8aef32cd0 100644
--- a/plinth/locale/gl/LC_MESSAGES/django.po
+++ b/plinth/locale/gl/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2021-01-18 12:32+0000\n"
 "Last-Translator: ikmaak <info@ikmaak.nl>\n"
 "Language-Team: Galician <https://hosted.weblate.org/projects/freedombox/"
@@ -934,8 +934,9 @@ msgstr ""
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr ""
@@ -1223,7 +1224,7 @@ msgstr ""
 msgid "Hiding advanced apps and features"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1231,17 +1232,17 @@ msgid ""
 "who are otherwise unable connect to each other."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr ""
 
@@ -1261,7 +1262,7 @@ msgstr ""
 msgid "Use the following URLs to configure your communication server:"
 msgstr ""
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 msgid "Use the following shared authentication secret:"
 msgstr ""
 
@@ -1744,7 +1745,7 @@ msgid "ejabberd"
 msgstr ""
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr ""
 
@@ -2678,7 +2679,7 @@ msgstr ""
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -2688,28 +2689,56 @@ msgid ""
 "converse with users on all other Matrix servers via federation."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 msgid "Enable Public Registration"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
 "users to be able to use it."
 msgstr ""
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+msgid "Shared Authentication Secret"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr ""
@@ -2736,7 +2765,7 @@ msgid ""
 "least one domain to be able to use Matrix Synapse."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -2744,13 +2773,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -2758,14 +2787,6 @@ msgid ""
 "go to <a href=\"%(letsencrypt_url)s\">Let's Encrypt</a> to obtain one."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr ""
-
-#: plinth/modules/matrixsynapse/views.py:90
-msgid "Public registration disabled"
-msgstr ""
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
diff --git a/plinth/locale/gu/LC_MESSAGES/django.po b/plinth/locale/gu/LC_MESSAGES/django.po
index 06c325e89..2a9edda3b 100644
--- a/plinth/locale/gu/LC_MESSAGES/django.po
+++ b/plinth/locale/gu/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2021-01-18 12:32+0000\n"
 "Last-Translator: ikmaak <info@ikmaak.nl>\n"
 "Language-Team: Gujarati <https://hosted.weblate.org/projects/freedombox/"
@@ -986,8 +986,9 @@ msgstr ""
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr "રૂપરેખાંકન સુધારાયુ"
@@ -1299,7 +1300,7 @@ msgstr ""
 msgid "Hiding advanced apps and features"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1307,17 +1308,17 @@ msgid ""
 "who are otherwise unable connect to each other."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr ""
 
@@ -1337,7 +1338,7 @@ msgstr ""
 msgid "Use the following URLs to configure your communication server:"
 msgstr ""
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 msgid "Use the following shared authentication secret:"
 msgstr ""
 
@@ -1897,7 +1898,7 @@ msgid "ejabberd"
 msgstr "ઈઝબેબર્ડ"
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr "ચેટ સર્વર"
 
@@ -2877,7 +2878,7 @@ msgstr ""
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -2887,30 +2888,60 @@ msgid ""
 "converse with users on all other Matrix servers via federation."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 #, fuzzy
 #| msgid "Enable application"
 msgid "Enable Public Registration"
 msgstr "એપ્લીકેશનને પ્રસ્થાપિત કરો"
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
 "users to be able to use it."
 msgstr ""
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+#, fuzzy
+#| msgid "Use HTTP basic authentication"
+msgid "Shared Authentication Secret"
+msgstr "HTTP મૂળભૂત પ્રમાણીકરણનો ઉપયોગ કરો"
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr ""
@@ -2937,7 +2968,7 @@ msgid ""
 "least one domain to be able to use Matrix Synapse."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -2945,13 +2976,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -2959,16 +2990,6 @@ msgid ""
 "go to <a href=\"%(letsencrypt_url)s\">Let's Encrypt</a> to obtain one."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr ""
-
-#: plinth/modules/matrixsynapse/views.py:90
-#, fuzzy
-#| msgid "Application installed."
-msgid "Public registration disabled"
-msgstr "એપ્લીકેશન પ્રસ્થાપિત થઇ ગઈ છે."
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
@@ -7638,6 +7659,11 @@ msgstr ""
 msgid "Gujarati"
 msgstr ""
 
+#, fuzzy
+#~| msgid "Application installed."
+#~ msgid "Public registration disabled"
+#~ msgstr "એપ્લીકેશન પ્રસ્થાપિત થઇ ગઈ છે."
+
 #, fuzzy
 #~| msgid "Manual"
 #~ msgctxt "Not automatically"
diff --git a/plinth/locale/hi/LC_MESSAGES/django.po b/plinth/locale/hi/LC_MESSAGES/django.po
index 5251c6b83..dbd29f849 100644
--- a/plinth/locale/hi/LC_MESSAGES/django.po
+++ b/plinth/locale/hi/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2021-01-18 12:32+0000\n"
 "Last-Translator: ikmaak <info@ikmaak.nl>\n"
 "Language-Team: Hindi <https://hosted.weblate.org/projects/freedombox/"
@@ -1044,8 +1044,9 @@ msgstr ""
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr "कॉन्फ़िगरेशन अपडेट करें"
@@ -1388,7 +1389,7 @@ msgstr ""
 msgid "Hiding advanced apps and features"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1396,17 +1397,17 @@ msgid ""
 "who are otherwise unable connect to each other."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr ""
 
@@ -1428,7 +1429,7 @@ msgstr ""
 msgid "Use the following URLs to configure your communication server:"
 msgstr ""
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 #, fuzzy
 #| msgid "The following disks are in use:"
 msgid "Use the following shared authentication secret:"
@@ -1990,7 +1991,7 @@ msgid "ejabberd"
 msgstr "एजाबेरड"
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr "चाट सर्वर"
 
@@ -3072,7 +3073,7 @@ msgstr "डोमेन के लिए प्रमाणपत्र का
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr "डोमेन के लिए प्रमाणपत्र नहीं हटाया गया {domain}:{error}"
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -3087,30 +3088,22 @@ msgstr ""
 "मल्टीपल डिवाइस सिंक्रनाइज़इज़ाशिन और काम करने के लिए फोन नंबर की ज़रुरत नहीं है. मैट्रिक्स "
 "सर्वर पर यूसरसॅ सारे मैट्रिक्स सर्वर के लेग से बात कर सकते है फ़ेडरेशिन उपयोग कर."
 
-#: plinth/modules/matrixsynapse/__init__.py:41
-#, fuzzy
-#| msgid ""
-#| "To communicate, you can use the <a href=\"https://matrix.org/docs/"
-#| "projects/\">available clients</a> for mobile, desktop and the web. <a "
-#| "href=\"https://riot.im/\">Riot</a> client is recommended."
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
-"संवाद करने के लिए, आप इससे उपयोग कर सकते है <a href=\"https://matrix.org/docs/"
-"projects/\">उपलब्ध क्लाइंट</a>मोबाइल, डेस्कटॉप और वेब के लिए. <a href=\"https://"
-"riot.im/\"> रेइट</a> क्लाइंट संस्तुत है."
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr "मैट्रिक्स सिनापसॅ"
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 msgid "Enable Public Registration"
 msgstr "सार्वजनिक रजिस्ट्रेशिनं सक्षम करें"
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
@@ -3120,6 +3113,36 @@ msgstr ""
 "एक नया अकाउंट रजिस्टर कर सकते हैं. अगर आप चहते है कि सिर्फ मौजूदा यूसरसॅ इसका उपयोग कर "
 "सकता है, इसे अक्षम करें."
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+#, fuzzy
+#| msgid "Authentication Mode"
+msgid "Shared Authentication Secret"
+msgstr "प्रमाणीकरण मोड"
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr ""
@@ -3155,7 +3178,7 @@ msgstr ""
 "कोई डोमेन उपलब्ध नहीं हैं. <a href=\"%(config_url)s\">कॉन्फ़िगर</a> एक डोमेन मैट्रिक्स "
 "सिनापसॅ उपयोग करने के लिए."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -3166,13 +3189,13 @@ msgstr ""
 "दिखाई देगा <em>@username:%(domain_name)s</em>. प्रारंभिक सेटअप के बाद डोमेन नाम "
 "बदलना करना वर्तमान मे समर्थित नहीं है."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -3180,14 +3203,6 @@ msgid ""
 "go to <a href=\"%(letsencrypt_url)s\">Let's Encrypt</a> to obtain one."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr "सार्वजनिक रजिस्टरेशिन सक्षम किया गया"
-
-#: plinth/modules/matrixsynapse/views.py:90
-msgid "Public registration disabled"
-msgstr "सार्वजनिक रजिस्टरेशिन अक्षम किया गया"
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
@@ -8409,6 +8424,26 @@ msgstr "%(percentage)s%% पूर्ण"
 msgid "Gujarati"
 msgstr ""
 
+#, fuzzy
+#~| msgid ""
+#~| "To communicate, you can use the <a href=\"https://matrix.org/docs/"
+#~| "projects/\">available clients</a> for mobile, desktop and the web. <a "
+#~| "href=\"https://riot.im/\">Riot</a> client is recommended."
+#~ msgid ""
+#~ "To communicate, you can use the <a href=\"https://matrix.org/docs/"
+#~ "projects/\">available clients</a> for mobile, desktop and the web. <a "
+#~ "href=\"https://element.io/\">Element</a> client is recommended."
+#~ msgstr ""
+#~ "संवाद करने के लिए, आप इससे उपयोग कर सकते है <a href=\"https://matrix.org/docs/"
+#~ "projects/\">उपलब्ध क्लाइंट</a>मोबाइल, डेस्कटॉप और वेब के लिए. <a href=\"https://"
+#~ "riot.im/\"> रेइट</a> क्लाइंट संस्तुत है."
+
+#~ msgid "Public registration enabled"
+#~ msgstr "सार्वजनिक रजिस्टरेशिन सक्षम किया गया"
+
+#~ msgid "Public registration disabled"
+#~ msgstr "सार्वजनिक रजिस्टरेशिन अक्षम किया गया"
+
 #, python-brace-format
 #~ msgid ""
 #~ "\"Automatic\" method will make {box_name} acquire configuration from this "
diff --git a/plinth/locale/hu/LC_MESSAGES/django.po b/plinth/locale/hu/LC_MESSAGES/django.po
index 5b39ce9ad..280e2b7c3 100644
--- a/plinth/locale/hu/LC_MESSAGES/django.po
+++ b/plinth/locale/hu/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2021-02-19 15:50+0000\n"
 "Last-Translator: Benedek Nagy <nbenedek@protonmail.com>\n"
 "Language-Team: Hungarian <https://hosted.weblate.org/projects/freedombox/"
@@ -1008,8 +1008,9 @@ msgstr "IP címek és tartományok frissítése"
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr "A beállítások frissültek"
@@ -1344,7 +1345,7 @@ msgstr "Haladó szintű alkalmazások és funkciók megjelenítése"
 msgid "Hiding advanced apps and features"
 msgstr "Haladó szintű alkalmazások és funkciók elrejtése"
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1357,7 +1358,7 @@ msgstr ""
 "felépíteni olyan felek között, akik egyébként nem tudnak csatlakozni "
 "egymáshoz."
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
@@ -1366,11 +1367,11 @@ msgstr ""
 "kiszolgálók, mint a matrix-synapse, az itt megadott részletekkel kell "
 "konfigurálni."
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr "Coturn"
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr "VoIP Segéd"
 
@@ -1393,7 +1394,7 @@ msgid "Use the following URLs to configure your communication server:"
 msgstr ""
 "A kommunikációs kiszolgáló konfigurálásához használja az alábbi URL-címeket:"
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 msgid "Use the following shared authentication secret:"
 msgstr "Használja az alábbi megosztott hitelesítési titkos kulcsot:"
 
@@ -1958,7 +1959,7 @@ msgid "ejabberd"
 msgstr "ejabberd"
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr "Chat szerver"
 
@@ -3057,7 +3058,7 @@ msgstr "{domain} domain-on a tanúsítvány sikeresen törölve"
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr "{domain} domain-on nem sikerült kitörölni a tanúsítványt: {error}"
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -3075,25 +3076,22 @@ msgstr ""
 "beszélgetni az összes többi Matrix kiszolgáló felhasználóival a szövetségen "
 "keresztül."
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
-"A kommunikációhoz válassz az <a href=\"https://matrix.org/docs/projects/"
-"\">elérhető kliensek</a> közül, akár mobil, asztali vagy webes felületűt. <a "
-"href=\"https://element.io/\">Element</a> kliens az ajánlott."
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr "Matrix Synapse"
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 msgid "Enable Public Registration"
 msgstr "Szabad regisztráció engedélyezése"
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
@@ -3103,6 +3101,36 @@ msgstr ""
 "felhasználói fiókot létrehozni a te Matrix kiszolgálódon. Tiltsd le, ha azt "
 "szeretnéd, hogy csak a már meglévő felhasználók használhassák."
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+#, fuzzy
+#| msgid "Authentication Mode"
+msgid "Shared Authentication Secret"
+msgstr "Hitelesítési mód"
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr "Element"
@@ -3140,7 +3168,7 @@ msgstr ""
 "Nincs elérhető domain. <a href=\"%(config_url)s\">Állíts be</a> legalább egy "
 "domain-t, hogy használni tudd a Matrix Synapse-t."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -3152,7 +3180,7 @@ msgstr ""
 "%(domain_name)s</em>. A domain név megváltoztatása a kezdeti beállítás után "
 "jelenleg nem támogatott."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
@@ -3160,7 +3188,7 @@ msgstr ""
 "Ha a szabad regisztráció engedélyezett, bármely kliensről lehet új "
 "felhasználót regisztrálni."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -3172,14 +3200,6 @@ msgstr ""
 "szükséged. Kérlek, látogasd meg a <a href=\"%(letsencrypt_url)s\">Let's "
 "Encrypt</a> weboldalát ahhoz, hogy beszerezz egyet."
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr "Szabad regisztráció engedélyezve"
-
-#: plinth/modules/matrixsynapse/views.py:90
-msgid "Public registration disabled"
-msgstr "Szabad regisztráció letiltva"
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
@@ -8245,6 +8265,21 @@ msgstr "befejezettségi szint: %(percentage)s%%"
 msgid "Gujarati"
 msgstr "Gudzsaráti"
 
+#~ msgid ""
+#~ "To communicate, you can use the <a href=\"https://matrix.org/docs/"
+#~ "projects/\">available clients</a> for mobile, desktop and the web. <a "
+#~ "href=\"https://element.io/\">Element</a> client is recommended."
+#~ msgstr ""
+#~ "A kommunikációhoz válassz az <a href=\"https://matrix.org/docs/projects/"
+#~ "\">elérhető kliensek</a> közül, akár mobil, asztali vagy webes felületűt. "
+#~ "<a href=\"https://element.io/\">Element</a> kliens az ajánlott."
+
+#~ msgid "Public registration enabled"
+#~ msgstr "Szabad regisztráció engedélyezve"
+
+#~ msgid "Public registration disabled"
+#~ msgstr "Szabad regisztráció letiltva"
+
 #, python-brace-format
 #~ msgid ""
 #~ "\"Automatic\" method will make {box_name} acquire configuration from this "
diff --git a/plinth/locale/id/LC_MESSAGES/django.po b/plinth/locale/id/LC_MESSAGES/django.po
index f18ebce62..6727c0d86 100644
--- a/plinth/locale/id/LC_MESSAGES/django.po
+++ b/plinth/locale/id/LC_MESSAGES/django.po
@@ -2,7 +2,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Indonesian (FreedomBox)\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2018-11-02 00:44+0000\n"
 "Last-Translator: ButterflyOfFire <ButterflyOfFire@protonmail.com>\n"
 "Language-Team: Indonesian <https://hosted.weblate.org/projects/freedombox/"
@@ -1013,8 +1013,9 @@ msgstr ""
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr ""
@@ -1320,7 +1321,7 @@ msgstr ""
 msgid "Hiding advanced apps and features"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1328,17 +1329,17 @@ msgid ""
 "who are otherwise unable connect to each other."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr ""
 
@@ -1360,7 +1361,7 @@ msgstr ""
 msgid "Use the following URLs to configure your communication server:"
 msgstr ""
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 msgid "Use the following shared authentication secret:"
 msgstr ""
 
@@ -1849,7 +1850,7 @@ msgid "ejabberd"
 msgstr ""
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 #, fuzzy
 #| msgid "Web Server"
 msgid "Chat Server"
@@ -2838,7 +2839,7 @@ msgstr ""
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -2848,30 +2849,60 @@ msgid ""
 "converse with users on all other Matrix servers via federation."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 #, fuzzy
 #| msgid "Enable application"
 msgid "Enable Public Registration"
 msgstr "Aktifkan aplikasi"
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
 "users to be able to use it."
 msgstr ""
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+#, fuzzy
+#| msgid "Authentication Mode"
+msgid "Shared Authentication Secret"
+msgstr "Authentication Mode"
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr ""
@@ -2898,7 +2929,7 @@ msgid ""
 "least one domain to be able to use Matrix Synapse."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -2906,13 +2937,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -2920,16 +2951,6 @@ msgid ""
 "go to <a href=\"%(letsencrypt_url)s\">Let's Encrypt</a> to obtain one."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr ""
-
-#: plinth/modules/matrixsynapse/views.py:90
-#, fuzzy
-#| msgid "Application installed."
-msgid "Public registration disabled"
-msgstr "Aplikasi telah terpasang."
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
@@ -7762,6 +7783,11 @@ msgstr ""
 msgid "Gujarati"
 msgstr ""
 
+#, fuzzy
+#~| msgid "Application installed."
+#~ msgid "Public registration disabled"
+#~ msgstr "Aplikasi telah terpasang."
+
 #~ msgid "Shared"
 #~ msgstr "Shared"
 
diff --git a/plinth/locale/it/LC_MESSAGES/django.po b/plinth/locale/it/LC_MESSAGES/django.po
index 31eadb062..35e1ff7ba 100644
--- a/plinth/locale/it/LC_MESSAGES/django.po
+++ b/plinth/locale/it/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2021-02-20 22:50+0000\n"
 "Last-Translator: Dietmar <sagen@permondes.de>\n"
 "Language-Team: Italian <https://hosted.weblate.org/projects/freedombox/"
@@ -1000,8 +1000,9 @@ msgstr ""
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr "Configurazione caricata"
@@ -1326,7 +1327,7 @@ msgstr "Visualizzazione di applicazioni e funzionalità avanzate"
 msgid "Hiding advanced apps and features"
 msgstr "Nascondere applicazioni e funzionalità avanzate"
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1334,17 +1335,17 @@ msgid ""
 "who are otherwise unable connect to each other."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr "Coturn"
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr ""
 
@@ -1364,7 +1365,7 @@ msgstr ""
 msgid "Use the following URLs to configure your communication server:"
 msgstr ""
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 msgid "Use the following shared authentication secret:"
 msgstr ""
 
@@ -1930,7 +1931,7 @@ msgid "ejabberd"
 msgstr "ejabberd"
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr "Server Chat"
 
@@ -3042,7 +3043,7 @@ msgstr "Certificato cancellato correttamente per il dominio {domain}"
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr "Cancellazione certificato fallita per il dominio {domain}:{error}"
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -3059,26 +3060,22 @@ msgstr ""
 "Gli utenti di un certo server Matrix possono comunicare con gli altri utenti "
 "attestati su tutti gli altri server Matrix tramite federazione."
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
-"Per comunicaee, puoi usare i <a href=\"https://matrix.org/docs/projects/"
-"\">client disponibili </a> per dispositivi mobili, desktop e per browser "
-"web. È raccomandato l'uso del client <a href=\"https://element.io/"
-"\">Element</a>."
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr "Matrix Synapse"
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 msgid "Enable Public Registration"
 msgstr "Abilita Registrazione Pubblica"
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
@@ -3088,6 +3085,36 @@ msgstr ""
 "Internet, può registrare un profilo sul tuo server Matrix. Disabilita questa "
 "funzione se vuoi che possano connettersi solo gli utenti esistenti."
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+#, fuzzy
+#| msgid "Authentication Mode"
+msgid "Shared Authentication Secret"
+msgstr "Modalità Autenticazione"
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr "Element"
@@ -3125,7 +3152,7 @@ msgstr ""
 "Non ci sono domini disponibili. <a href=\"%(config_url)s\">Configura</a> "
 "almeno un dominio per poter usare Matrix Synapse."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -3137,7 +3164,7 @@ msgstr ""
 "del nome di dominio dopo la prima configurazione, attualmente, non è "
 "supportato."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 #, fuzzy
 msgid ""
 "New users can be registered from any client if public registration is "
@@ -3146,7 +3173,7 @@ msgstr ""
 "I nuovi utenti possono essere registrati da qualsiasi cliente se la "
 "registrazione pubblica è abilitata."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -3154,14 +3181,6 @@ msgid ""
 "go to <a href=\"%(letsencrypt_url)s\">Let's Encrypt</a> to obtain one."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr "Registrazione pubblica abilitata"
-
-#: plinth/modules/matrixsynapse/views.py:90
-msgid "Public registration disabled"
-msgstr "Registrazione pubblica disabilitata"
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
@@ -7917,6 +7936,22 @@ msgstr "%(percentage)s%% completata"
 msgid "Gujarati"
 msgstr ""
 
+#~ msgid ""
+#~ "To communicate, you can use the <a href=\"https://matrix.org/docs/"
+#~ "projects/\">available clients</a> for mobile, desktop and the web. <a "
+#~ "href=\"https://element.io/\">Element</a> client is recommended."
+#~ msgstr ""
+#~ "Per comunicaee, puoi usare i <a href=\"https://matrix.org/docs/projects/"
+#~ "\">client disponibili </a> per dispositivi mobili, desktop e per browser "
+#~ "web. È raccomandato l'uso del client <a href=\"https://element.io/"
+#~ "\">Element</a>."
+
+#~ msgid "Public registration enabled"
+#~ msgstr "Registrazione pubblica abilitata"
+
+#~ msgid "Public registration disabled"
+#~ msgstr "Registrazione pubblica disabilitata"
+
 #, python-brace-format
 #~ msgid ""
 #~ "\"Automatic\" method will make {box_name} acquire configuration from this "
diff --git a/plinth/locale/ja/LC_MESSAGES/django.po b/plinth/locale/ja/LC_MESSAGES/django.po
index 452abc14a..a267d11a8 100644
--- a/plinth/locale/ja/LC_MESSAGES/django.po
+++ b/plinth/locale/ja/LC_MESSAGES/django.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -929,8 +929,9 @@ msgstr ""
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr ""
@@ -1218,7 +1219,7 @@ msgstr ""
 msgid "Hiding advanced apps and features"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1226,17 +1227,17 @@ msgid ""
 "who are otherwise unable connect to each other."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr ""
 
@@ -1256,7 +1257,7 @@ msgstr ""
 msgid "Use the following URLs to configure your communication server:"
 msgstr ""
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 msgid "Use the following shared authentication secret:"
 msgstr ""
 
@@ -1739,7 +1740,7 @@ msgid "ejabberd"
 msgstr ""
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr ""
 
@@ -2671,7 +2672,7 @@ msgstr ""
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -2681,28 +2682,56 @@ msgid ""
 "converse with users on all other Matrix servers via federation."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 msgid "Enable Public Registration"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
 "users to be able to use it."
 msgstr ""
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+msgid "Shared Authentication Secret"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr ""
@@ -2729,7 +2758,7 @@ msgid ""
 "least one domain to be able to use Matrix Synapse."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -2737,13 +2766,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -2751,14 +2780,6 @@ msgid ""
 "go to <a href=\"%(letsencrypt_url)s\">Let's Encrypt</a> to obtain one."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr ""
-
-#: plinth/modules/matrixsynapse/views.py:90
-msgid "Public registration disabled"
-msgstr ""
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
diff --git a/plinth/locale/kn/LC_MESSAGES/django.po b/plinth/locale/kn/LC_MESSAGES/django.po
index 81d1a060f..5321ae357 100644
--- a/plinth/locale/kn/LC_MESSAGES/django.po
+++ b/plinth/locale/kn/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2020-07-16 16:41+0000\n"
 "Last-Translator: Yogesh <yogesh@karnatakaeducation.org.in>\n"
 "Language-Team: Kannada <https://hosted.weblate.org/projects/freedombox/"
@@ -930,8 +930,9 @@ msgstr ""
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr ""
@@ -1219,7 +1220,7 @@ msgstr ""
 msgid "Hiding advanced apps and features"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1227,17 +1228,17 @@ msgid ""
 "who are otherwise unable connect to each other."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr ""
 
@@ -1257,7 +1258,7 @@ msgstr ""
 msgid "Use the following URLs to configure your communication server:"
 msgstr ""
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 msgid "Use the following shared authentication secret:"
 msgstr ""
 
@@ -1740,7 +1741,7 @@ msgid "ejabberd"
 msgstr ""
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr ""
 
@@ -2672,7 +2673,7 @@ msgstr ""
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -2682,28 +2683,56 @@ msgid ""
 "converse with users on all other Matrix servers via federation."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 msgid "Enable Public Registration"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
 "users to be able to use it."
 msgstr ""
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+msgid "Shared Authentication Secret"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr ""
@@ -2730,7 +2759,7 @@ msgid ""
 "least one domain to be able to use Matrix Synapse."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -2738,13 +2767,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -2752,14 +2781,6 @@ msgid ""
 "go to <a href=\"%(letsencrypt_url)s\">Let's Encrypt</a> to obtain one."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr ""
-
-#: plinth/modules/matrixsynapse/views.py:90
-msgid "Public registration disabled"
-msgstr ""
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
diff --git a/plinth/locale/lt/LC_MESSAGES/django.po b/plinth/locale/lt/LC_MESSAGES/django.po
index 8975cdef6..cf447da77 100644
--- a/plinth/locale/lt/LC_MESSAGES/django.po
+++ b/plinth/locale/lt/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2021-02-22 10:50+0000\n"
 "Last-Translator: Kornelijus Tvarijanavičius <kornelitvari@protonmail.com>\n"
 "Language-Team: Lithuanian <https://hosted.weblate.org/projects/freedombox/"
@@ -931,8 +931,9 @@ msgstr ""
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr ""
@@ -1220,7 +1221,7 @@ msgstr ""
 msgid "Hiding advanced apps and features"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1228,17 +1229,17 @@ msgid ""
 "who are otherwise unable connect to each other."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr ""
 
@@ -1258,7 +1259,7 @@ msgstr ""
 msgid "Use the following URLs to configure your communication server:"
 msgstr ""
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 msgid "Use the following shared authentication secret:"
 msgstr ""
 
@@ -1741,7 +1742,7 @@ msgid "ejabberd"
 msgstr ""
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr ""
 
@@ -2673,7 +2674,7 @@ msgstr ""
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -2683,28 +2684,56 @@ msgid ""
 "converse with users on all other Matrix servers via federation."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 msgid "Enable Public Registration"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
 "users to be able to use it."
 msgstr ""
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+msgid "Shared Authentication Secret"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr ""
@@ -2731,7 +2760,7 @@ msgid ""
 "least one domain to be able to use Matrix Synapse."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -2739,13 +2768,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -2753,14 +2782,6 @@ msgid ""
 "go to <a href=\"%(letsencrypt_url)s\">Let's Encrypt</a> to obtain one."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr ""
-
-#: plinth/modules/matrixsynapse/views.py:90
-msgid "Public registration disabled"
-msgstr ""
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
diff --git a/plinth/locale/nb/LC_MESSAGES/django.po b/plinth/locale/nb/LC_MESSAGES/django.po
index 3a70da0cb..8e2114833 100644
--- a/plinth/locale/nb/LC_MESSAGES/django.po
+++ b/plinth/locale/nb/LC_MESSAGES/django.po
@@ -15,7 +15,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: FreedomBox UI\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2021-02-14 10:50+0000\n"
 "Last-Translator: Allan Nordhøy <epost@anotheragency.no>\n"
 "Language-Team: Norwegian Bokmål <https://hosted.weblate.org/projects/"
@@ -1016,8 +1016,9 @@ msgstr "Oppdater IP-adresse og domener"
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr "Oppsett oppdatert"
@@ -1353,7 +1354,7 @@ msgstr "Viser avanserte programmer og funksjoner"
 msgid "Hiding advanced apps and features"
 msgstr "Viser ikke avanserte programmer og funksjoner"
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1365,7 +1366,7 @@ msgstr ""
 "kommunikasjonstjenere kan bruke det for å etablere en samtale mellom parter "
 "som ellers ikke ville kunne kontakte hverandre."
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
@@ -1373,11 +1374,11 @@ msgstr ""
 "Det er ikke ment å brukes direkte av brukere. Tjenere som matrix-synapse må "
 "settes opp med detaljene herfra."
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr "Coturn"
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr "VoIP-hjelper"
 
@@ -1399,7 +1400,7 @@ msgstr ""
 msgid "Use the following URLs to configure your communication server:"
 msgstr "Bruk følgende nettadresser for å sette opp din kommunikasjonstjener:"
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 #, fuzzy
 #| msgid "The following storage devices are in use:"
 msgid "Use the following shared authentication secret:"
@@ -1972,7 +1973,7 @@ msgid "ejabberd"
 msgstr "ejabberd"
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr "Nettprat-tjener"
 
@@ -3088,7 +3089,7 @@ msgstr "Vellykket sletting av sertifikatet for domenet {domain}"
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr "Klarte ikke å slette sertifikatet for domenet {domain}: {error}"
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -3104,30 +3105,22 @@ msgstr ""
 "enheter, og krever ikke telefonnumre for å virke. Brukere på en gitt Matrix-"
 "tjener kan snakke med brukere på alle andre samvirkende Matrix-tjenere."
 
-#: plinth/modules/matrixsynapse/__init__.py:41
-#, fuzzy
-#| msgid ""
-#| "To communicate, you can use the <a href=\"https://matrix.org/docs/"
-#| "projects/\">available clients</a> for mobile, desktop and the web. <a "
-#| "href=\"https://riot.im/\">Riot</a> client is recommended."
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
-"For å kommunisere kan du bruke <a href=\"https://matrix.org/docs/projects/"
-"\">available clients (tilgjengelige klienter)</a> for mobil, PC og "
-"Internett. <a href=\"https://riot.im/\"> Riot</a>-klient anbefales."
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr "Matrix Synapse"
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 msgid "Enable Public Registration"
 msgstr "Skru på offentlig registrering"
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
@@ -3137,6 +3130,36 @@ msgstr ""
 "en ny konto på din Matrix-tjener. Skru dette av hvis du vil at kun "
 "eksisterende brukere skal kunne bruke den."
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+#, fuzzy
+#| msgid "Authentication Mode"
+msgid "Shared Authentication Secret"
+msgstr "Autentiseringsmodus"
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr "Element"
@@ -3173,7 +3196,7 @@ msgstr ""
 "Det finnes ingen domener. <a href=\"%(config_url)s\">Configure (Konfigurer)</"
 "a> minst ett domene for å kunne bruke Matrix Synapse."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -3184,7 +3207,7 @@ msgstr ""
 "se slik ut <em>@username:%(domain_name)s</em>. Endring av domenenavnet etter "
 "det første oppsettet støttes ikke for øyeblikket."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
@@ -3192,7 +3215,7 @@ msgstr ""
 "Nye brukere kan registrere seg fra enhver klient hvis offentlig registrering "
 "er påskrudd."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -3203,14 +3226,6 @@ msgstr ""
 "Matrix Synapse-instanser krever et gyldig TLS-sertifikat. Gå til <a href="
 "\"%(letsencrypt_url)s\">Let's Encrypt</a> for å skaffe deg det."
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr "Offentlig registrering påskrudd"
-
-#: plinth/modules/matrixsynapse/views.py:90
-msgid "Public registration disabled"
-msgstr "Offentlig registrering avskrudd"
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
@@ -5417,9 +5432,9 @@ msgid ""
 msgstr ""
 "Du kan bruke Privoxy ved å endre nettleserens mellomlagerinnstillinger til "
 "ditt {box_name}-vertsnavn (eller IP-adresse) med port 8118. Mens du bruker "
-"Privoxy, kan du se konfigurasjonsdetaljer og dokumentasjon via <a href=\"http"
-"://config.privoxy.org\">http://config.privoxy.org/</a> eller <a href=\"http"
-"://p.p\">http://p.p</a>."
+"Privoxy, kan du se konfigurasjonsdetaljer og dokumentasjon via <a href="
+"\"http://config.privoxy.org\">http://config.privoxy.org/</a> eller <a href="
+"\"http://p.p\">http://p.p</a>."
 
 #: plinth/modules/privoxy/__init__.py:56
 msgid "Privoxy"
@@ -8519,6 +8534,26 @@ msgstr "%(percentage)s%% fullført"
 msgid "Gujarati"
 msgstr "Gujarati"
 
+#, fuzzy
+#~| msgid ""
+#~| "To communicate, you can use the <a href=\"https://matrix.org/docs/"
+#~| "projects/\">available clients</a> for mobile, desktop and the web. <a "
+#~| "href=\"https://riot.im/\">Riot</a> client is recommended."
+#~ msgid ""
+#~ "To communicate, you can use the <a href=\"https://matrix.org/docs/"
+#~ "projects/\">available clients</a> for mobile, desktop and the web. <a "
+#~ "href=\"https://element.io/\">Element</a> client is recommended."
+#~ msgstr ""
+#~ "For å kommunisere kan du bruke <a href=\"https://matrix.org/docs/projects/"
+#~ "\">available clients (tilgjengelige klienter)</a> for mobil, PC og "
+#~ "Internett. <a href=\"https://riot.im/\"> Riot</a>-klient anbefales."
+
+#~ msgid "Public registration enabled"
+#~ msgstr "Offentlig registrering påskrudd"
+
+#~ msgid "Public registration disabled"
+#~ msgstr "Offentlig registrering avskrudd"
+
 #, python-brace-format
 #~ msgid ""
 #~ "\"Automatic\" method will make {box_name} acquire configuration from this "
diff --git a/plinth/locale/nl/LC_MESSAGES/django.po b/plinth/locale/nl/LC_MESSAGES/django.po
index ccabb521a..d272a38df 100644
--- a/plinth/locale/nl/LC_MESSAGES/django.po
+++ b/plinth/locale/nl/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2021-02-14 10:50+0000\n"
 "Last-Translator: ikmaak <info@ikmaak.nl>\n"
 "Language-Team: Dutch <https://hosted.weblate.org/projects/freedombox/"
@@ -1013,8 +1013,9 @@ msgstr "IP adressen en domeinen verversen"
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr "Configuratie bijgewerkt"
@@ -1348,7 +1349,7 @@ msgstr "Geavanceerde toepassingen en functies worden weergeven"
 msgid "Hiding advanced apps and features"
 msgstr "Geavanceerde toepassingen en functies verbergen"
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1361,7 +1362,7 @@ msgstr ""
 "gesprek tot stand te brengen tussen partijen die anders geen verbinding met "
 "elkaar kunnen maken."
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
@@ -1369,11 +1370,11 @@ msgstr ""
 "Niet bedoeld om zelf door gebruikers te worden gebruikt. Servers zoals "
 "matrix-synapse moeten worden geconfigureerd met de hier verstrekte details."
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr "Coturn"
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr "VoIP helper"
 
@@ -1395,7 +1396,7 @@ msgstr ""
 msgid "Use the following URLs to configure your communication server:"
 msgstr "Gebruik de volgende URL's om de communicatieserver in te stellen:"
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 msgid "Use the following shared authentication secret:"
 msgstr "Gebruik het volgende gedeelde authenticatie geheim:"
 
@@ -1954,7 +1955,7 @@ msgid "ejabberd"
 msgstr "ejabberd"
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr "Chatserver"
 
@@ -3054,7 +3055,7 @@ msgstr "Certificaat met succes verwijderd voor domein {domain}"
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr "Verwijderen certificaat voor domein {domain} mislukt: {error}"
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -3071,26 +3072,22 @@ msgstr ""
 "Matrix server kunnen gesprekken aangaan met gebruikers op alle andere Matrix "
 "servers door federatie (gedecentraliseerd netwerk)."
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
-"Om hiervan gebruik te maken, gebruik je de <a href=\"https://matrix.org/docs/"
-"projects/\">beschikbare programma's</a> voor smartphone, computer of via het "
-"web. Het programma <a href=\"https://element.io/\">Element</a> wordt "
-"aanbevolen."
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr "Matrix Synapse"
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 msgid "Enable Public Registration"
 msgstr "Openbare registratie inschakelen"
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
@@ -3100,6 +3097,36 @@ msgstr ""
 "nieuwe gebruikersaccount kan aanmaken op deze Matrix server. Schakel dit uit "
 "als alleen reeds geregistreerde gebruikers deze dienst mogen gebruiken."
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+#, fuzzy
+#| msgid "Authentication Mode"
+msgid "Shared Authentication Secret"
+msgstr "Authentificatiemodus"
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr "Element"
@@ -3137,7 +3164,7 @@ msgstr ""
 "Er zijn geen domeinen beschikbaar. <a href=\"%(config_url)s\">Configureer</"
 "a> tenminste één domein om Matrix Synapse te kunnen gebruiken."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -3149,7 +3176,7 @@ msgstr ""
 "%(domain_name)s</em>. Het veranderen van de domeinnaam na de eerste "
 "configuratie wordt op het moment niet ondersteund."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
@@ -3157,7 +3184,7 @@ msgstr ""
 "Nieuwe gebruikers kunnen worden geregistreerd vanaf elke client als de "
 "openbare registratie is ingeschakeld."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -3169,14 +3196,6 @@ msgstr ""
 "vereist. Ga naar <a href=\"%(letsencrypt_url)s\">Let's Encrypt</a> om er een "
 "te verkrijgen."
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr "Openbare registratie ingeschakeld"
-
-#: plinth/modules/matrixsynapse/views.py:90
-msgid "Public registration disabled"
-msgstr "Openbare registratie uitgeschakeld"
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
@@ -8414,6 +8433,22 @@ msgstr "%(percentage)s%% voltooid"
 msgid "Gujarati"
 msgstr "Gujarati"
 
+#~ msgid ""
+#~ "To communicate, you can use the <a href=\"https://matrix.org/docs/"
+#~ "projects/\">available clients</a> for mobile, desktop and the web. <a "
+#~ "href=\"https://element.io/\">Element</a> client is recommended."
+#~ msgstr ""
+#~ "Om hiervan gebruik te maken, gebruik je de <a href=\"https://matrix.org/"
+#~ "docs/projects/\">beschikbare programma's</a> voor smartphone, computer of "
+#~ "via het web. Het programma <a href=\"https://element.io/\">Element</a> "
+#~ "wordt aanbevolen."
+
+#~ msgid "Public registration enabled"
+#~ msgstr "Openbare registratie ingeschakeld"
+
+#~ msgid "Public registration disabled"
+#~ msgstr "Openbare registratie uitgeschakeld"
+
 #, python-brace-format
 #~ msgid ""
 #~ "\"Automatic\" method will make {box_name} acquire configuration from this "
diff --git a/plinth/locale/pl/LC_MESSAGES/django.po b/plinth/locale/pl/LC_MESSAGES/django.po
index 34f2e03d5..e62a0f514 100644
--- a/plinth/locale/pl/LC_MESSAGES/django.po
+++ b/plinth/locale/pl/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2021-02-01 18:42+0000\n"
 "Last-Translator: Stanisław Stefan Krukowski <pet209a1@riseup.net>\n"
 "Language-Team: Polish <https://hosted.weblate.org/projects/freedombox/"
@@ -998,8 +998,9 @@ msgstr "Odśwież adres IP i domeny"
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr "Konfigurcja uaktualniona"
@@ -1329,7 +1330,7 @@ msgstr "Wyświetlanie zaawansowanych aplikacji i cech"
 msgid "Hiding advanced apps and features"
 msgstr "Ukrywanie zaawansowanych aplikacji i cech"
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1337,17 +1338,17 @@ msgid ""
 "who are otherwise unable connect to each other."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr "Coturn"
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr "Asystent VoIP"
 
@@ -1368,7 +1369,7 @@ msgid "Use the following URLs to configure your communication server:"
 msgstr ""
 "Użyj następujących adresów URL, aby skonfigurować serwer komunikacyjny:"
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 #, fuzzy
 #| msgid "The following disks are in use:"
 msgid "Use the following shared authentication secret:"
@@ -1926,7 +1927,7 @@ msgid "ejabberd"
 msgstr "ejabberd"
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr "Serwer czatu"
 
@@ -2948,7 +2949,7 @@ msgstr ""
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -2958,30 +2959,60 @@ msgid ""
 "converse with users on all other Matrix servers via federation."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 #, fuzzy
 #| msgid "Enable application"
 msgid "Enable Public Registration"
 msgstr "Aktywuj aplikację"
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
 "users to be able to use it."
 msgstr ""
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+#, fuzzy
+#| msgid "The following disks are in use:"
+msgid "Shared Authentication Secret"
+msgstr "Używane są następujące dyski:"
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr "Element"
@@ -3008,7 +3039,7 @@ msgid ""
 "least one domain to be able to use Matrix Synapse."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -3016,13 +3047,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -3030,16 +3061,6 @@ msgid ""
 "go to <a href=\"%(letsencrypt_url)s\">Let's Encrypt</a> to obtain one."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr ""
-
-#: plinth/modules/matrixsynapse/views.py:90
-#, fuzzy
-#| msgid "Application installed."
-msgid "Public registration disabled"
-msgstr "Aplikacja zainstalowania."
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
@@ -7839,6 +7860,11 @@ msgstr ""
 msgid "Gujarati"
 msgstr "Gujarati"
 
+#, fuzzy
+#~| msgid "Application installed."
+#~ msgid "Public registration disabled"
+#~ msgstr "Aplikacja zainstalowania."
+
 #, fuzzy
 #~| msgid "Manual"
 #~ msgctxt "Not automatically"
diff --git a/plinth/locale/pt/LC_MESSAGES/django.po b/plinth/locale/pt/LC_MESSAGES/django.po
index 56eb11fd5..85c6d75e1 100644
--- a/plinth/locale/pt/LC_MESSAGES/django.po
+++ b/plinth/locale/pt/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2021-01-18 12:32+0000\n"
 "Last-Translator: ikmaak <info@ikmaak.nl>\n"
 "Language-Team: Portuguese <https://hosted.weblate.org/projects/freedombox/"
@@ -995,8 +995,9 @@ msgstr "Atualizar endereço de IP e domínios"
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr "Configuração atualizada"
@@ -1304,7 +1305,7 @@ msgstr "A mostrar as aplicações e funcionalidades avançadas"
 msgid "Hiding advanced apps and features"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1312,17 +1313,17 @@ msgid ""
 "who are otherwise unable connect to each other."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr ""
 
@@ -1344,7 +1345,7 @@ msgstr ""
 msgid "Use the following URLs to configure your communication server:"
 msgstr ""
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 msgid "Use the following shared authentication secret:"
 msgstr ""
 
@@ -1835,7 +1836,7 @@ msgid "ejabberd"
 msgstr ""
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr ""
 
@@ -2818,7 +2819,7 @@ msgstr ""
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -2828,30 +2829,58 @@ msgid ""
 "converse with users on all other Matrix servers via federation."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 #, fuzzy
 #| msgid "Enable application"
 msgid "Enable Public Registration"
 msgstr "Ativar aplicação"
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
 "users to be able to use it."
 msgstr ""
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+msgid "Shared Authentication Secret"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr ""
@@ -2878,7 +2907,7 @@ msgid ""
 "least one domain to be able to use Matrix Synapse."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -2886,14 +2915,14 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
 msgstr ""
 "Novos utilizadores podem registar-se se o registo público estiver activado."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -2901,18 +2930,6 @@ msgid ""
 "go to <a href=\"%(letsencrypt_url)s\">Let's Encrypt</a> to obtain one."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/views.py:85
-#, fuzzy
-#| msgid "Applications"
-msgid "Public registration enabled"
-msgstr "Aplicações"
-
-#: plinth/modules/matrixsynapse/views.py:90
-#, fuzzy
-#| msgid "Applications"
-msgid "Public registration disabled"
-msgstr "Aplicações"
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
@@ -7638,6 +7655,16 @@ msgstr "%(percentage)s%% concluída"
 msgid "Gujarati"
 msgstr "Gujarati"
 
+#, fuzzy
+#~| msgid "Applications"
+#~ msgid "Public registration enabled"
+#~ msgstr "Aplicações"
+
+#, fuzzy
+#~| msgid "Applications"
+#~ msgid "Public registration disabled"
+#~ msgstr "Aplicações"
+
 #, fuzzy
 #~| msgid "Manual"
 #~ msgctxt "Not automatically"
diff --git a/plinth/locale/ru/LC_MESSAGES/django.po b/plinth/locale/ru/LC_MESSAGES/django.po
index 8dfe3ebe0..841df33a1 100644
--- a/plinth/locale/ru/LC_MESSAGES/django.po
+++ b/plinth/locale/ru/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2021-02-01 18:42+0000\n"
 "Last-Translator: Алексей Докучаев <deathlike333@gmail.com>\n"
 "Language-Team: Russian <https://hosted.weblate.org/projects/freedombox/"
@@ -1010,8 +1010,9 @@ msgstr "Обновите IP-адреса и домены"
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr "Конфигурация обновлена"
@@ -1344,7 +1345,7 @@ msgstr "Показать продвинутые приложения и функ
 msgid "Hiding advanced apps and features"
 msgstr "Скрыть продвинутые приложения и функции"
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1356,7 +1357,7 @@ msgstr ""
 "коммуникационные серверы могут использовать его для установления вызова "
 "между сторонами, которые иначе не могут подключиться друг к другу."
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
@@ -1365,11 +1366,11 @@ msgstr ""
 "серверы, как matrix-synapse, должны быть настроены с указанными здесь "
 "деталями."
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr "Coturn"
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr "VoIP-помощник"
 
@@ -1393,7 +1394,7 @@ msgstr ""
 "Используйте следующие URL-адреса для настройки вашего коммуникационного "
 "сервера:"
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 msgid "Use the following shared authentication secret:"
 msgstr "Используйте следующий общий секрет аутентификации:"
 
@@ -1949,7 +1950,7 @@ msgid "ejabberd"
 msgstr "еjabberd"
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr "Чат-сервер"
 
@@ -3038,7 +3039,7 @@ msgstr "Сертификат успешно удален для домена {do
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr "Не удалось удалить сертификат для домена {domain}: {error}"
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -3055,25 +3056,22 @@ msgstr ""
 "одном сервере Matrix могут общаться с пользователями на всех остальных "
 "серверах."
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
-"Для общения вы можете использовать <a href=\"https://matrix.org/docs/"
-"projects/\">различные клиенты</a> для телефонов, десктопов или web. "
-"Рекомендуется использовать <a href=\"https://element.io/\">Element</a>."
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr "Matrix Synapse"
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 msgid "Enable Public Registration"
 msgstr "Включить публичную регистрацию"
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
@@ -3083,6 +3081,36 @@ msgstr ""
 "Интернета может зарегистрировать новую учетную запись на вашем сервере "
 "Martix. Отключите это, если нужен доступ только существующим пользователям."
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+#, fuzzy
+#| msgid "Authentication Mode"
+msgid "Shared Authentication Secret"
+msgstr "Режим проверки подлинности"
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr "Element"
@@ -3120,7 +3148,7 @@ msgstr ""
 "Нет доступных доменов. <a href=\"%(config_url)s\">Настройте</a>по крайней "
 "мере один домен, чтобы иметь возможность использовать Matrix."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -3132,7 +3160,7 @@ msgstr ""
 "em>. Изменение имени домена после первоначальной настройки в настоящее время "
 "не поддерживается."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
@@ -3140,7 +3168,7 @@ msgstr ""
 "Новые пользователи могут быть зарегистрированы с любого клиента, если "
 "включена публичная регистрация."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -3152,14 +3180,6 @@ msgstr ""
 "Пожалуйста, посетите <a href=\"%(letsencrypt_url)s\">Let's Encrypt</a>, "
 "чтобы получить его."
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr "Публичная регистрация включена"
-
-#: plinth/modules/matrixsynapse/views.py:90
-msgid "Public registration disabled"
-msgstr "Публичная регистрация отключена"
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
@@ -8412,6 +8432,21 @@ msgstr "%(percentage)s%% завершено"
 msgid "Gujarati"
 msgstr "Гуджарати"
 
+#~ msgid ""
+#~ "To communicate, you can use the <a href=\"https://matrix.org/docs/"
+#~ "projects/\">available clients</a> for mobile, desktop and the web. <a "
+#~ "href=\"https://element.io/\">Element</a> client is recommended."
+#~ msgstr ""
+#~ "Для общения вы можете использовать <a href=\"https://matrix.org/docs/"
+#~ "projects/\">различные клиенты</a> для телефонов, десктопов или web. "
+#~ "Рекомендуется использовать <a href=\"https://element.io/\">Element</a>."
+
+#~ msgid "Public registration enabled"
+#~ msgstr "Публичная регистрация включена"
+
+#~ msgid "Public registration disabled"
+#~ msgstr "Публичная регистрация отключена"
+
 #, python-brace-format
 #~ msgid ""
 #~ "\"Automatic\" method will make {box_name} acquire configuration from this "
diff --git a/plinth/locale/sl/LC_MESSAGES/django.po b/plinth/locale/sl/LC_MESSAGES/django.po
index 3a89dd7cc..a6dac7f73 100644
--- a/plinth/locale/sl/LC_MESSAGES/django.po
+++ b/plinth/locale/sl/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2021-01-18 12:32+0000\n"
 "Last-Translator: ikmaak <info@ikmaak.nl>\n"
 "Language-Team: Slovenian <https://hosted.weblate.org/projects/freedombox/"
@@ -1040,8 +1040,9 @@ msgstr ""
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr "Konfiguracija je posodobljena"
@@ -1362,7 +1363,7 @@ msgstr ""
 msgid "Hiding advanced apps and features"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1370,17 +1371,17 @@ msgid ""
 "who are otherwise unable connect to each other."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr ""
 
@@ -1400,7 +1401,7 @@ msgstr ""
 msgid "Use the following URLs to configure your communication server:"
 msgstr ""
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 msgid "Use the following shared authentication secret:"
 msgstr ""
 
@@ -1888,7 +1889,7 @@ msgid "ejabberd"
 msgstr ""
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr ""
 
@@ -2846,7 +2847,7 @@ msgstr ""
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -2856,28 +2857,56 @@ msgid ""
 "converse with users on all other Matrix servers via federation."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 msgid "Enable Public Registration"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
 "users to be able to use it."
 msgstr ""
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+msgid "Shared Authentication Secret"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr ""
@@ -2904,7 +2933,7 @@ msgid ""
 "least one domain to be able to use Matrix Synapse."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -2912,13 +2941,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -2926,14 +2955,6 @@ msgid ""
 "go to <a href=\"%(letsencrypt_url)s\">Let's Encrypt</a> to obtain one."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr ""
-
-#: plinth/modules/matrixsynapse/views.py:90
-msgid "Public registration disabled"
-msgstr ""
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
diff --git a/plinth/locale/sr/LC_MESSAGES/django.po b/plinth/locale/sr/LC_MESSAGES/django.po
index 370180161..ba87ce151 100644
--- a/plinth/locale/sr/LC_MESSAGES/django.po
+++ b/plinth/locale/sr/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2021-01-18 12:32+0000\n"
 "Last-Translator: ikmaak <info@ikmaak.nl>\n"
 "Language-Team: Serbian <https://hosted.weblate.org/projects/freedombox/"
@@ -990,8 +990,9 @@ msgstr "Osveži listu IP adresa i domena"
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr "Konfiguracija sačuvana"
@@ -1291,7 +1292,7 @@ msgstr ""
 msgid "Hiding advanced apps and features"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1299,17 +1300,17 @@ msgid ""
 "who are otherwise unable connect to each other."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr ""
 
@@ -1329,7 +1330,7 @@ msgstr ""
 msgid "Use the following URLs to configure your communication server:"
 msgstr ""
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 msgid "Use the following shared authentication secret:"
 msgstr ""
 
@@ -1812,7 +1813,7 @@ msgid "ejabberd"
 msgstr ""
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr ""
 
@@ -2744,7 +2745,7 @@ msgstr ""
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -2754,28 +2755,56 @@ msgid ""
 "converse with users on all other Matrix servers via federation."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 msgid "Enable Public Registration"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
 "users to be able to use it."
 msgstr ""
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+msgid "Shared Authentication Secret"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr ""
@@ -2802,7 +2831,7 @@ msgid ""
 "least one domain to be able to use Matrix Synapse."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -2810,13 +2839,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -2824,14 +2853,6 @@ msgid ""
 "go to <a href=\"%(letsencrypt_url)s\">Let's Encrypt</a> to obtain one."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr ""
-
-#: plinth/modules/matrixsynapse/views.py:90
-msgid "Public registration disabled"
-msgstr ""
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
diff --git a/plinth/locale/sv/LC_MESSAGES/django.po b/plinth/locale/sv/LC_MESSAGES/django.po
index a297f3168..9c8f49351 100644
--- a/plinth/locale/sv/LC_MESSAGES/django.po
+++ b/plinth/locale/sv/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2021-02-16 04:50+0000\n"
 "Last-Translator: Michael Breidenbach <leahc@tutanota.com>\n"
 "Language-Team: Swedish <https://hosted.weblate.org/projects/freedombox/"
@@ -1010,8 +1010,9 @@ msgstr "Uppdatera IP-adress och domäner"
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr "Konfiguration uppdaterad"
@@ -1340,7 +1341,7 @@ msgstr "Visar avancerade appar och funktioner"
 msgid "Hiding advanced apps and features"
 msgstr "Dölja avancerade appar och funktioner"
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1352,7 +1353,7 @@ msgstr ""
 "WebRTC, SIP och andra kommunikationsservrar kan använda den för att upprätta "
 "ett samtal mellan parter som annars inte kan ansluta till varandra."
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
@@ -1360,11 +1361,11 @@ msgstr ""
 "Det är inte avsett att användas direkt av användarna. Servrar som matris-"
 "synaps måste konfigureras med de uppgifter som anges här."
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr "Coturn"
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr "VoIP-hjälpare"
 
@@ -1387,7 +1388,7 @@ msgid "Use the following URLs to configure your communication server:"
 msgstr ""
 "Använd följande webbadresser för att konfigurera din kommunikationsserver:"
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 msgid "Use the following shared authentication secret:"
 msgstr "Använd följande delade autentiseringshemligheter:"
 
@@ -1945,7 +1946,7 @@ msgid "ejabberd"
 msgstr "ejabbert"
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr "Chat-Server"
 
@@ -3030,7 +3031,7 @@ msgstr "Certifikatet framgångsrikt återkallat för domänen {domain}"
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr "Det gick inte att ta bort certifikatet för domänen {domain}: {error}"
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -3047,25 +3048,22 @@ msgstr ""
 "fungera. Användare på en given Matrix-server kan samtala med användare på "
 "alla andra Matrix-servrar via federation."
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
-"För att kommunicera kan du använda <a href=\"https://matrix.org/docs/"
-"projects/\">tillgängliga klienter</a> för mobil, skrivbord och webben. <a "
-"href=\"https://element.io/\">Element</a> -klient rekommenderas."
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr "Matrix Synapse"
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 msgid "Enable Public Registration"
 msgstr "Aktivera offentlig registrering"
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
@@ -3075,6 +3073,36 @@ msgstr ""
 "kan registrera ett nytt konto på din Matrix-server. Inaktivera detta om du "
 "bara vill att befintliga användare ska kunna använda det."
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+#, fuzzy
+#| msgid "Authentication Mode"
+msgid "Shared Authentication Secret"
+msgstr "Autentiseringsläge"
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr "Element"
@@ -3110,7 +3138,7 @@ msgstr ""
 "Inga domän (er) är tillgängliga. <a href=\"%(config_url)s\">Konfigurera</a> "
 "minst en domän för att kunna använda Matrix Synapse."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -3121,7 +3149,7 @@ msgstr ""
 "kommer att se ut som <em>@användarnamn:%(domain_name)s </em>. Ändring av "
 "domännamn efter den första installationen stöds för närvarande inte."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
@@ -3129,7 +3157,7 @@ msgstr ""
 "Nya användare kan registreras från valfri klient om offentlig registrering "
 "är aktiverad."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -3141,14 +3169,6 @@ msgstr ""
 "certifikat. Gå till <a href=\"%(letsencrypt_url)s\">Let's Encrypt</a> för "
 "att få en sådan."
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr "Offentlig registrering aktiverad"
-
-#: plinth/modules/matrixsynapse/views.py:90
-msgid "Public registration disabled"
-msgstr "Offentlig registrering avaktiverad"
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
@@ -8347,6 +8367,21 @@ msgstr "%(percentage)s %% färdigt"
 msgid "Gujarati"
 msgstr "Gujarati"
 
+#~ msgid ""
+#~ "To communicate, you can use the <a href=\"https://matrix.org/docs/"
+#~ "projects/\">available clients</a> for mobile, desktop and the web. <a "
+#~ "href=\"https://element.io/\">Element</a> client is recommended."
+#~ msgstr ""
+#~ "För att kommunicera kan du använda <a href=\"https://matrix.org/docs/"
+#~ "projects/\">tillgängliga klienter</a> för mobil, skrivbord och webben. <a "
+#~ "href=\"https://element.io/\">Element</a> -klient rekommenderas."
+
+#~ msgid "Public registration enabled"
+#~ msgstr "Offentlig registrering aktiverad"
+
+#~ msgid "Public registration disabled"
+#~ msgstr "Offentlig registrering avaktiverad"
+
 #, python-brace-format
 #~ msgid ""
 #~ "\"Automatic\" method will make {box_name} acquire configuration from this "
diff --git a/plinth/locale/ta/LC_MESSAGES/django.po b/plinth/locale/ta/LC_MESSAGES/django.po
index 5593a5ac1..1599976a3 100644
--- a/plinth/locale/ta/LC_MESSAGES/django.po
+++ b/plinth/locale/ta/LC_MESSAGES/django.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -929,8 +929,9 @@ msgstr ""
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr ""
@@ -1218,7 +1219,7 @@ msgstr ""
 msgid "Hiding advanced apps and features"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1226,17 +1227,17 @@ msgid ""
 "who are otherwise unable connect to each other."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr ""
 
@@ -1256,7 +1257,7 @@ msgstr ""
 msgid "Use the following URLs to configure your communication server:"
 msgstr ""
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 msgid "Use the following shared authentication secret:"
 msgstr ""
 
@@ -1739,7 +1740,7 @@ msgid "ejabberd"
 msgstr ""
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr ""
 
@@ -2671,7 +2672,7 @@ msgstr ""
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -2681,28 +2682,56 @@ msgid ""
 "converse with users on all other Matrix servers via federation."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 msgid "Enable Public Registration"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
 "users to be able to use it."
 msgstr ""
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+msgid "Shared Authentication Secret"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr ""
@@ -2729,7 +2758,7 @@ msgid ""
 "least one domain to be able to use Matrix Synapse."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -2737,13 +2766,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -2751,14 +2780,6 @@ msgid ""
 "go to <a href=\"%(letsencrypt_url)s\">Let's Encrypt</a> to obtain one."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr ""
-
-#: plinth/modules/matrixsynapse/views.py:90
-msgid "Public registration disabled"
-msgstr ""
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
diff --git a/plinth/locale/te/LC_MESSAGES/django.po b/plinth/locale/te/LC_MESSAGES/django.po
index 0dca77ec7..7ae4a1682 100644
--- a/plinth/locale/te/LC_MESSAGES/django.po
+++ b/plinth/locale/te/LC_MESSAGES/django.po
@@ -9,7 +9,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: FreedomBox UI\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2020-10-26 13:27+0000\n"
 "Last-Translator: Praveen Illa <mail2ipn@gmail.com>\n"
 "Language-Team: Telugu <https://hosted.weblate.org/projects/freedombox/"
@@ -1018,8 +1018,9 @@ msgstr "IP చిరునామా మరియు డొమైన్‌లన
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr "ఆకృతీకరణ నవీకరించబడింది"
@@ -1348,7 +1349,7 @@ msgstr "అధునాతన అనువర్తనాలు మరియు
 msgid "Hiding advanced apps and features"
 msgstr "అధునాతన అనువర్తనాలు మరియు విశేషాంశాలు దాచబడుతున్నాయి"
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1356,17 +1357,17 @@ msgid ""
 "who are otherwise unable connect to each other."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr ""
 
@@ -1390,7 +1391,7 @@ msgstr ""
 msgid "Use the following URLs to configure your communication server:"
 msgstr ""
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 #, fuzzy
 #| msgid "The following disks are in use:"
 msgid "Use the following shared authentication secret:"
@@ -1952,7 +1953,7 @@ msgid "ejabberd"
 msgstr "ఈజాబ్బర్డి"
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr "కబుర్ల సేవిక"
 
@@ -3035,7 +3036,7 @@ msgstr "{domain} డోమైన్ కొరకు సర్టిఫికే
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr "{domain} డోమైన్ కొరకు ధృవీకరణపత్రం నిర్మూలించడంలో విఫలం: {error}"
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -3045,30 +3046,22 @@ msgid ""
 "converse with users on all other Matrix servers via federation."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:41
-#, fuzzy
-#| msgid ""
-#| "To communicate, you can use the <a href=\"https://matrix.org/docs/"
-#| "projects/\">available clients</a> for mobile, desktop and the web. <a "
-#| "href=\"https://riot.im/\">Riot</a> client is recommended."
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
-"కమ్యూనికేట్ చేయడానికి, మీరు మొబైల్, డెస్క్టాప్ మరియు వెబ్ కోసం <a href=\"https://matrix.org/docs/"
-"projects/\"> అందుబాటులో ఉన్న ఖాతాదారులను</a> ఉపయోగించవచ్చు. ఇచట <a href=\"https://"
-"riot.im/\">రయట్</a> క్లయింట్ సిఫార్సు చేయబడింది."
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr "మ్యాట్రిక్స్ సినాప్స్"
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 msgid "Enable Public Registration"
 msgstr "పబ్లిక్ రిజిస్ట్రేషన్ ప్రారంభించండి"
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
@@ -3077,6 +3070,36 @@ msgstr ""
 "ప్రజా నమోదును సశక్త పరచడం అంటే అంతర్జాలం లో ఉన్న ఎవరైనా కూడా మీ మాట్రిక్స్ సర్వర్ మీద ఖాతాను "
 "సృష్టించుకోగలరు. ప్రస్తుతం ఉండే వినియోగదారులు మాత్రమే వినియోగించాలి అనుకుంటే దీనిని నిర్వీర్యం చేయగలరు."
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+#, fuzzy
+#| msgid "Authentication Mode"
+msgid "Shared Authentication Secret"
+msgstr "ప్రామాణీకరణ విధం"
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr ""
@@ -3112,7 +3135,7 @@ msgstr ""
 "ఏ డొమైన్ (లు) అందుబాటులో లేవు. <a href=\"%(config_url)s\">ఆక్రుతీకరించండి </a>కనీసం ఒక "
 "డొమైన్ మ్యాట్రిక్స్ సినాప్సేను ఉపయోగించగలదు."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -3123,13 +3146,13 @@ msgstr ""
 "<em>@వినియోగదారిడి పేరు:%(domain_name)s</em>ఇలా కనిపిస్తుంది. ప్రారంభ సెట్టింగు తర్వాత డొమైన్ పేరు "
 "మార్చడం ప్రస్తుతం మద్దతు లేదు."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
 msgstr "పబ్లిక్ రిజిస్ట్రేషన్ ప్రారంభించబడితే ఏదైనా క్లయింట్ నుండి క్రొత్త వినియోగదారులను నమోదు చేసుకోవచ్చు."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -3137,14 +3160,6 @@ msgid ""
 "go to <a href=\"%(letsencrypt_url)s\">Let's Encrypt</a> to obtain one."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr "పబ్లిక్ రిజిస్ట్రేషన్ ప్రారంభించబడింది"
-
-#: plinth/modules/matrixsynapse/views.py:90
-msgid "Public registration disabled"
-msgstr "పబ్లిక్ రిజిస్ట్రేషన్ నిలిపివేయబడింది"
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
@@ -8313,6 +8328,26 @@ msgstr "%(percentage)s %% పూర్తి"
 msgid "Gujarati"
 msgstr "గుజరాతీ"
 
+#, fuzzy
+#~| msgid ""
+#~| "To communicate, you can use the <a href=\"https://matrix.org/docs/"
+#~| "projects/\">available clients</a> for mobile, desktop and the web. <a "
+#~| "href=\"https://riot.im/\">Riot</a> client is recommended."
+#~ msgid ""
+#~ "To communicate, you can use the <a href=\"https://matrix.org/docs/"
+#~ "projects/\">available clients</a> for mobile, desktop and the web. <a "
+#~ "href=\"https://element.io/\">Element</a> client is recommended."
+#~ msgstr ""
+#~ "కమ్యూనికేట్ చేయడానికి, మీరు మొబైల్, డెస్క్టాప్ మరియు వెబ్ కోసం <a href=\"https://matrix.org/"
+#~ "docs/projects/\"> అందుబాటులో ఉన్న ఖాతాదారులను</a> ఉపయోగించవచ్చు. ఇచట <a href="
+#~ "\"https://riot.im/\">రయట్</a> క్లయింట్ సిఫార్సు చేయబడింది."
+
+#~ msgid "Public registration enabled"
+#~ msgstr "పబ్లిక్ రిజిస్ట్రేషన్ ప్రారంభించబడింది"
+
+#~ msgid "Public registration disabled"
+#~ msgstr "పబ్లిక్ రిజిస్ట్రేషన్ నిలిపివేయబడింది"
+
 #, fuzzy, python-brace-format
 #~ msgid ""
 #~ "\"Automatic\" method will make {box_name} acquire configuration from this "
diff --git a/plinth/locale/tr/LC_MESSAGES/django.po b/plinth/locale/tr/LC_MESSAGES/django.po
index d2dec30ea..97cdffc84 100644
--- a/plinth/locale/tr/LC_MESSAGES/django.po
+++ b/plinth/locale/tr/LC_MESSAGES/django.po
@@ -6,7 +6,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2021-02-14 10:50+0000\n"
 "Last-Translator: Burak Yavuz <hitowerdigit@hotmail.com>\n"
 "Language-Team: Turkish <https://hosted.weblate.org/projects/freedombox/"
@@ -1000,8 +1000,9 @@ msgstr "IP adresi ve etki alanlarını yenile"
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr "Yapılandırma güncellendi"
@@ -1335,7 +1336,7 @@ msgstr "Gelişmiş uygulamalar ve özellikler gösteriliyor"
 msgid "Hiding advanced apps and features"
 msgstr "Gelişmiş uygulamalar ve özellikler gizleniyor"
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1347,7 +1348,7 @@ msgstr ""
 "SIP ve diğer iletişim sunucuları, başka şekilde birbirleriyle bağlantı "
 "kuramayan taraflar arasında bir çağrı kurmak için bunu kullanabilir."
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
@@ -1356,11 +1357,11 @@ msgstr ""
 "synapse gibi sunucuların burada sağlanan ayrıntılarla yapılandırılması "
 "gerekir."
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr "Coturn"
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr "VoIP Yardımcısı"
 
@@ -1382,7 +1383,7 @@ msgstr ""
 msgid "Use the following URLs to configure your communication server:"
 msgstr "İletişim sunucunuzu yapılandırmak için aşağıdaki URL'leri kullanın:"
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 msgid "Use the following shared authentication secret:"
 msgstr "Aşağıdaki paylaşılan kimlik doğrulama gizli anahtarını kullanın:"
 
@@ -1941,7 +1942,7 @@ msgid "ejabberd"
 msgstr "ejabberd"
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr "Sohbet Sunucusu"
 
@@ -3034,7 +3035,7 @@ msgstr "{domain} etki alanı için sertifika başarılı olarak silindi"
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr "{domain} etki alanı için sertifika silme başarısız oldu: {error}"
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -3051,25 +3052,22 @@ msgstr ""
 "kullanıcılar, federasyon aracılığıyla diğer tüm Matrix sunucularındaki "
 "kullanıcılarla sohbet edebilir."
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
-"İletişim kurmak amacıyla, mobil, masaüstü ve web için <a href=\"https://"
-"matrix.org/docs/projects/\">mevcut istemcileri</a> kullanabilirsiniz. <a "
-"href=\"https://element.io/\">Element</a> istemci önerilir."
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr "Matrix Synapse"
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 msgid "Enable Public Registration"
 msgstr "Herkese Açık Kaydı etkinleştir"
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
@@ -3079,6 +3077,36 @@ msgstr ""
 "yeni bir hesap açabileceği anlamına gelir. Sadece varolan kullanıcıların "
 "kullanabilmesini istiyorsanız bunu etkisizleştirin."
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+#, fuzzy
+#| msgid "Authentication Mode"
+msgid "Shared Authentication Secret"
+msgstr "Kimlik Doğrulama Kipi"
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr "Element"
@@ -3115,7 +3143,7 @@ msgstr ""
 "Kullanılabilir etki alan(ları)ı yok. Matrix Synapse'ı kullanabilmek için en "
 "az bir etki alanı <a href=\"%(config_url)s\">yapılandırın</a>."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -3127,7 +3155,7 @@ msgstr ""
 "görünecek. İlk ayarlamadan sonra etki alanı adının değiştirilmesi şu anda "
 "desteklenmiyor."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
@@ -3135,7 +3163,7 @@ msgstr ""
 "Herkese açık kayıt etkinleştirilirse, herhangi bir istemciden yeni "
 "kullanıcılar kaydedilebilir."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -3147,14 +3175,6 @@ msgstr ""
 "sertifikası gerekir. Bir tane edinmek için lütfen <a href="
 "\"%(letsencrypt_url)s\">Let's Encrypt</a>'a gidin."
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr "Herkese açık kayıt etkinleştirildi"
-
-#: plinth/modules/matrixsynapse/views.py:90
-msgid "Public registration disabled"
-msgstr "Herkese açık kayıt etkisizleştirildi"
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
@@ -8367,6 +8387,21 @@ msgstr "%%%(percentage)s tamamlandı"
 msgid "Gujarati"
 msgstr "Gujarati"
 
+#~ msgid ""
+#~ "To communicate, you can use the <a href=\"https://matrix.org/docs/"
+#~ "projects/\">available clients</a> for mobile, desktop and the web. <a "
+#~ "href=\"https://element.io/\">Element</a> client is recommended."
+#~ msgstr ""
+#~ "İletişim kurmak amacıyla, mobil, masaüstü ve web için <a href=\"https://"
+#~ "matrix.org/docs/projects/\">mevcut istemcileri</a> kullanabilirsiniz. <a "
+#~ "href=\"https://element.io/\">Element</a> istemci önerilir."
+
+#~ msgid "Public registration enabled"
+#~ msgstr "Herkese açık kayıt etkinleştirildi"
+
+#~ msgid "Public registration disabled"
+#~ msgstr "Herkese açık kayıt etkisizleştirildi"
+
 #, python-brace-format
 #~ msgid ""
 #~ "\"Automatic\" method will make {box_name} acquire configuration from this "
diff --git a/plinth/locale/uk/LC_MESSAGES/django.po b/plinth/locale/uk/LC_MESSAGES/django.po
index c78e10bab..01b0ec69b 100644
--- a/plinth/locale/uk/LC_MESSAGES/django.po
+++ b/plinth/locale/uk/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2021-01-18 12:32+0000\n"
 "Last-Translator: ikmaak <info@ikmaak.nl>\n"
 "Language-Team: Ukrainian <https://hosted.weblate.org/projects/freedombox/"
@@ -1007,8 +1007,9 @@ msgstr ""
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr "Конфігурацію оновлено"
@@ -1307,7 +1308,7 @@ msgstr ""
 msgid "Hiding advanced apps and features"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1315,17 +1316,17 @@ msgid ""
 "who are otherwise unable connect to each other."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr ""
 
@@ -1345,7 +1346,7 @@ msgstr ""
 msgid "Use the following URLs to configure your communication server:"
 msgstr ""
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 msgid "Use the following shared authentication secret:"
 msgstr ""
 
@@ -1832,7 +1833,7 @@ msgid "ejabberd"
 msgstr ""
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr ""
 
@@ -2790,7 +2791,7 @@ msgstr ""
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -2800,28 +2801,56 @@ msgid ""
 "converse with users on all other Matrix servers via federation."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 msgid "Enable Public Registration"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
 "users to be able to use it."
 msgstr ""
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+msgid "Shared Authentication Secret"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr ""
@@ -2848,7 +2877,7 @@ msgid ""
 "least one domain to be able to use Matrix Synapse."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -2856,13 +2885,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -2870,14 +2899,6 @@ msgid ""
 "go to <a href=\"%(letsencrypt_url)s\">Let's Encrypt</a> to obtain one."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr ""
-
-#: plinth/modules/matrixsynapse/views.py:90
-msgid "Public registration disabled"
-msgstr ""
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
diff --git a/plinth/locale/zh_Hans/LC_MESSAGES/django.po b/plinth/locale/zh_Hans/LC_MESSAGES/django.po
index 5c5107af5..6511438aa 100644
--- a/plinth/locale/zh_Hans/LC_MESSAGES/django.po
+++ b/plinth/locale/zh_Hans/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Plinth\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2021-01-18 12:32+0000\n"
 "Last-Translator: ikmaak <info@ikmaak.nl>\n"
 "Language-Team: Chinese (Simplified) <https://hosted.weblate.org/projects/"
@@ -1030,8 +1030,9 @@ msgstr ""
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr "配置已更新"
@@ -1358,7 +1359,7 @@ msgstr "展现先进的应用和特征"
 msgid "Hiding advanced apps and features"
 msgstr "隐藏先进的应用和特征"
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1366,17 +1367,17 @@ msgid ""
 "who are otherwise unable connect to each other."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr ""
 
@@ -1398,7 +1399,7 @@ msgstr ""
 msgid "Use the following URLs to configure your communication server:"
 msgstr ""
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 #, fuzzy
 #| msgid "The following disks are in use:"
 msgid "Use the following shared authentication secret:"
@@ -1941,7 +1942,7 @@ msgid "ejabberd"
 msgstr ""
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 #, fuzzy
 #| msgid "Web Server"
 msgid "Chat Server"
@@ -3040,7 +3041,7 @@ msgstr "成功为域名 {domain} 吊销证书"
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr "无法为 {domain} 撤销证书：{error}"
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -3050,14 +3051,14 @@ msgid ""
 "converse with users on all other Matrix servers via federation."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 #, fuzzy
 #| msgid ""
 #| "Chat Server \n"
@@ -3067,19 +3068,49 @@ msgstr ""
 "聊天服务器\n"
 "（Matrix Synapse）"
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 #, fuzzy
 #| msgid "Enable application"
 msgid "Enable Public Registration"
 msgstr "启用应用程序"
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
 "users to be able to use it."
 msgstr ""
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+#, fuzzy
+#| msgid "Authentication Mode"
+msgid "Shared Authentication Secret"
+msgstr "身份验证模式"
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr ""
@@ -3106,7 +3137,7 @@ msgid ""
 "least one domain to be able to use Matrix Synapse."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, fuzzy, python-format
 #| msgid ""
 #| "Your XMPP server domain is set to <b>%(domainname)s</b>. User IDs will "
@@ -3121,13 +3152,13 @@ msgstr ""
 "%(domainname)s</i>。你可以在系统的<a href=\\\"%(index_url)s\\\">配置</a>中设"
 "置你的域名。"
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -3135,18 +3166,6 @@ msgid ""
 "go to <a href=\"%(letsencrypt_url)s\">Let's Encrypt</a> to obtain one."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/views.py:85
-#, fuzzy
-#| msgid "Application enabled"
-msgid "Public registration enabled"
-msgstr "应用程序已启用"
-
-#: plinth/modules/matrixsynapse/views.py:90
-#, fuzzy
-#| msgid "Application disabled"
-msgid "Public registration disabled"
-msgstr "应用程序已禁用"
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "
@@ -8413,6 +8432,16 @@ msgstr "已完成 %(percentage)s%%"
 msgid "Gujarati"
 msgstr "古吉拉特语"
 
+#, fuzzy
+#~| msgid "Application enabled"
+#~ msgid "Public registration enabled"
+#~ msgstr "应用程序已启用"
+
+#, fuzzy
+#~| msgid "Application disabled"
+#~ msgid "Public registration disabled"
+#~ msgstr "应用程序已禁用"
+
 #, python-brace-format
 #~ msgid ""
 #~ "\"Automatic\" method will make {box_name} acquire configuration from this "
diff --git a/plinth/locale/zh_Hant/LC_MESSAGES/django.po b/plinth/locale/zh_Hant/LC_MESSAGES/django.po
index 2d3299366..fd2fc1631 100644
--- a/plinth/locale/zh_Hant/LC_MESSAGES/django.po
+++ b/plinth/locale/zh_Hant/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-11 17:23-0500\n"
+"POT-Creation-Date: 2021-02-28 20:13-0500\n"
 "PO-Revision-Date: 2021-01-25 11:32+0000\n"
 "Last-Translator: crlambda <lm3c@protonmail.ch>\n"
 "Language-Team: Chinese (Traditional) <https://hosted.weblate.org/projects/"
@@ -947,8 +947,9 @@ msgstr ""
 
 #: plinth/modules/bind/views.py:71 plinth/modules/coturn/views.py:39
 #: plinth/modules/deluge/views.py:42 plinth/modules/dynamicdns/views.py:154
-#: plinth/modules/mumble/views.py:28 plinth/modules/pagekite/forms.py:76
-#: plinth/modules/quassel/views.py:29 plinth/modules/shadowsocks/views.py:59
+#: plinth/modules/matrixsynapse/views.py:124 plinth/modules/mumble/views.py:28
+#: plinth/modules/pagekite/forms.py:76 plinth/modules/quassel/views.py:29
+#: plinth/modules/shadowsocks/views.py:59
 #: plinth/modules/transmission/views.py:47
 msgid "Configuration updated"
 msgstr "配置已更新"
@@ -1236,7 +1237,7 @@ msgstr ""
 msgid "Hiding advanced apps and features"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:32
+#: plinth/modules/coturn/__init__.py:34
 msgid ""
 "Coturn is a server to facilitate audio/video calls and conferences by "
 "providing an implementation of TURN and STUN protocols. WebRTC, SIP and "
@@ -1244,17 +1245,17 @@ msgid ""
 "who are otherwise unable connect to each other."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:36
+#: plinth/modules/coturn/__init__.py:38
 msgid ""
 "It is not meant to be used directly by users. Servers such as matrix-synapse "
 "need to be configured with the details provided here."
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:53
+#: plinth/modules/coturn/__init__.py:57
 msgid "Coturn"
 msgstr ""
 
-#: plinth/modules/coturn/__init__.py:54
+#: plinth/modules/coturn/__init__.py:58
 msgid "VoIP Helper"
 msgstr ""
 
@@ -1274,7 +1275,7 @@ msgstr ""
 msgid "Use the following URLs to configure your communication server:"
 msgstr ""
 
-#: plinth/modules/coturn/templates/coturn.html:26
+#: plinth/modules/coturn/templates/coturn.html:24
 msgid "Use the following shared authentication secret:"
 msgstr ""
 
@@ -1757,7 +1758,7 @@ msgid "ejabberd"
 msgstr ""
 
 #: plinth/modules/ejabberd/__init__.py:65
-#: plinth/modules/matrixsynapse/__init__.py:69
+#: plinth/modules/matrixsynapse/__init__.py:77
 msgid "Chat Server"
 msgstr ""
 
@@ -2689,7 +2690,7 @@ msgstr ""
 msgid "Failed to delete certificate for domain {domain}: {error}"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:34
+#: plinth/modules/matrixsynapse/__init__.py:37
 msgid ""
 "<a href=\"https://matrix.org/docs/guides/faq.html\">Matrix</a> is an new "
 "ecosystem for open, federated instant messaging and VoIP. Synapse is a "
@@ -2699,28 +2700,56 @@ msgid ""
 "converse with users on all other Matrix servers via federation."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:41
+#: plinth/modules/matrixsynapse/__init__.py:45
+#, python-brace-format
 msgid ""
-"To communicate, you can use the <a href=\"https://matrix.org/docs/projects/"
-"\">available clients</a> for mobile, desktop and the web. <a href=\"https://"
-"element.io/\">Element</a> client is recommended."
+"Matrix Synapse needs a STUN/TURN server for audio/video calls. Install the "
+"<a href={coturn_url}>Coturn</a> app or configure an external server."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/__init__.py:68
+#: plinth/modules/matrixsynapse/__init__.py:76
 msgid "Matrix Synapse"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:12
+#: plinth/modules/matrixsynapse/forms.py:15
 msgid "Enable Public Registration"
 msgstr ""
 
-#: plinth/modules/matrixsynapse/forms.py:13
+#: plinth/modules/matrixsynapse/forms.py:16
 msgid ""
 "Enabling public registration means that anyone on the Internet can register "
 "a new account on your Matrix server. Disable this if you only want existing "
 "users to be able to use it."
 msgstr ""
 
+#: plinth/modules/matrixsynapse/forms.py:21
+msgid "Automatically manage audio/video call setup"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:23
+#, python-brace-format
+msgid ""
+"Configures the local <a href={coturn_url}>coturn</a> app as the STUN/TURN "
+"server for Matrix Synapse. Disable this if you want to use a different STUN/"
+"TURN server."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:30
+msgid "STUN/TURN Server URIs"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:32
+msgid "List of public URIs of the STUN/TURN server, one on each line."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:36
+msgid "Shared Authentication Secret"
+msgstr ""
+
+#: plinth/modules/matrixsynapse/forms.py:37
+msgid "Shared secret used to compute passwords for the TURN server."
+msgstr ""
+
 #: plinth/modules/matrixsynapse/manifest.py:12
 msgid "Element"
 msgstr ""
@@ -2747,7 +2776,7 @@ msgid ""
 "least one domain to be able to use Matrix Synapse."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:14
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:15
 #, python-format
 msgid ""
 "The Matrix server domain is set to <em>%(domain_name)s</em>. User IDs will "
@@ -2755,13 +2784,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:21
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:22
 msgid ""
 "New users can be registered from any client if public registration is "
 "enabled."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:30
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:31
 #, python-format
 msgid ""
 "The configured domain name is using a self-signed certificate. Federation "
@@ -2769,14 +2798,6 @@ msgid ""
 "go to <a href=\"%(letsencrypt_url)s\">Let's Encrypt</a> to obtain one."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/views.py:85
-msgid "Public registration enabled"
-msgstr ""
-
-#: plinth/modules/matrixsynapse/views.py:90
-msgid "Public registration disabled"
-msgstr ""
-
 #: plinth/modules/mediawiki/__init__.py:28
 msgid ""
 "MediaWiki is the wiki engine that powers Wikipedia and other WikiMedia "