diff --git a/user_manual/locale/cs/LC_MESSAGES/pim/sync_thunderbird.pot b/user_manual/locale/cs/LC_MESSAGES/pim/sync_thunderbird.pot
index 9556556df..ae554b5be 100644
--- a/user_manual/locale/cs/LC_MESSAGES/pim/sync_thunderbird.pot
+++ b/user_manual/locale/cs/LC_MESSAGES/pim/sync_thunderbird.pot
@@ -12,7 +12,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Nextcloud latest User Manual latest\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-05-07 13:47+0000\n"
+"POT-Creation-Date: 2021-10-26 12:22+0000\n"
 "PO-Revision-Date: 2019-11-07 20:29+0000\n"
 "Last-Translator: Pavel Borecki <pavel.borecki@gmail.com>, 2021\n"
 "Language-Team: Czech (https://www.transifex.com/nextcloud/teams/64236/cs/)\n"
@@ -48,34 +48,24 @@ msgid "Recommended method"
 msgstr "Doporučené metody"
 
 #: ../../pim/sync_thunderbird.rst:11
-msgid "For this method, you need to have three add-ons installed:"
-msgstr "Pro tuto metodu je třeba mít nainstalované tři doplňky:"
+msgid "For this method, you need to have two add-ons installed:"
+msgstr "Pro tuto metodu je třeba mít nainstalované dva doplňky:"
 
 #: ../../pim/sync_thunderbird.rst:13
 msgid ""
-"The `Lightning calendar "
-"<https://addons.thunderbird.net/en/thunderbird/addon/lightning/>`_ (Only "
-"needed for Thunderbird versions up to 68)."
+"`TbSync <https://addons.thunderbird.net/en/thunderbird/addon/tbsync/>`_."
 msgstr ""
-"`Kalendář Lightning "
-"<https://addons.thunderbird.net/en/thunderbird/addon/lightning/>`_ (Potřebný"
-" jen pro Thunderbird starší, než verze 68)"
+"`TbSync <https://addons.thunderbird.net/en/thunderbird/addon/tbsync/>`_."
 
 #: ../../pim/sync_thunderbird.rst:14
 msgid ""
-"`TbSync <https://addons.thunderbird.net/en/thunderbird/addon/tbsync/>`_."
-msgstr ""
-"`TbSync <https://addons.thunderbird.net/en/thunderbird/addon/tbsync/>`_."
-
-#: ../../pim/sync_thunderbird.rst:15
-msgid ""
 "The `TbSync provider for CalDAV and CardDAV "
 "<https://addons.thunderbird.net/en/thunderbird/addon/dav-4-tbsync/>`_."
 msgstr ""
 "`Poskytovatel `TbSync pro CalDAV a CardDAV "
 "<https://addons.thunderbird.net/en/thunderbird/addon/dav-4-tbsync/>`_."
 
-#: ../../pim/sync_thunderbird.rst:17
+#: ../../pim/sync_thunderbird.rst:16
 msgid ""
 "When they are installed, if you are on Windows, go to "
 "**Extras**/**Synchronisation settings (TbSync)** or **Edit/Synchronisation "
@@ -85,13 +75,13 @@ msgstr ""
 "**Extra**/**Nastavení synchronizace (TbSync)** nebo **Upravit/Nastavení "
 "synchronizace (TbSync)** pokud na Linuxu a potom:"
 
-#: ../../pim/sync_thunderbird.rst:19
+#: ../../pim/sync_thunderbird.rst:18
 msgid ""
 "In the account manager choose \"**Add account** / **CalDAV / CardDAV "
 "account**\""
 msgstr "Ve správě účtů zvolte „**Add account** / **CalDAV / CardDAV účet**“"
 
-#: ../../pim/sync_thunderbird.rst:20
+#: ../../pim/sync_thunderbird.rst:19
 msgid ""
 "In the next window, go with the default called **Automatic configuration** "
 "and click **next**"
@@ -99,7 +89,7 @@ msgstr ""
 "V následujícím okně použijte výchozí hodnotu, nazvanou **Automatické "
 "nastavení** a klikněte na **další**"
 
-#: ../../pim/sync_thunderbird.rst:21
+#: ../../pim/sync_thunderbird.rst:20
 msgid ""
 "Enter an **account name**, which you can freely choose, **user name**, "
 "**password** and the **URL of your server** and click **next**"
@@ -108,7 +98,7 @@ msgstr ""
 "jméno**, **heslo** a **URL adresu vámi využívaného serveru** a klikněte na "
 "**další**"
 
-#: ../../pim/sync_thunderbird.rst:22
+#: ../../pim/sync_thunderbird.rst:21
 msgid ""
 "In the next window, TbSync should have autodiscovered the CalDAV and CardDAV"
 " addresses. When it has, click **Finish**"
@@ -116,7 +106,7 @@ msgstr ""
 "V následujícím okně by TbSync mělo automaticky objevit CalDAV a CardDAV "
 "adresy. Pokud ano, klikněte na **Dokončit**"
 
-#: ../../pim/sync_thunderbird.rst:23
+#: ../../pim/sync_thunderbird.rst:22
 msgid ""
 "Now check the box **Enable and synchronize this account**. TbSync will "
 "discover all address books and calenders your account has access to on the "
@@ -126,7 +116,7 @@ msgstr ""
 "veškeré adresáře kontaktů a kalendáře, ke kterým má váš účet přístup na "
 "serveru"
 
-#: ../../pim/sync_thunderbird.rst:24
+#: ../../pim/sync_thunderbird.rst:23
 msgid ""
 "Check the box next to each calender and address book you want to have "
 "synchronised, also set how often you want them to be synchronised and push "
@@ -136,7 +126,7 @@ msgstr ""
 "také nastavte, jak často chcete, aby byly synchronizovány a stiskněte "
 "tlačítko **synchronizovat nyní**"
 
-#: ../../pim/sync_thunderbird.rst:25
+#: ../../pim/sync_thunderbird.rst:24
 msgid ""
 "After the first successful synchronisation is complete, you can close the "
 "window. Henceforth, TbSync will do the work for you. You are done and can "
@@ -146,11 +136,11 @@ msgstr ""
 "bude TbSync pracovat za vás. Máte hotovo a můžete přeskočit na další sekci "
 "(pokud nepotřebujete pokročilejší adresář kontaktů)"
 
-#: ../../pim/sync_thunderbird.rst:29
+#: ../../pim/sync_thunderbird.rst:28
 msgid "Alternative: Using the CardBook add-on (Contacts only)"
 msgstr "Alternativa: Použití doplňku CardBook (pouze kontakty)"
 
-#: ../../pim/sync_thunderbird.rst:30
+#: ../../pim/sync_thunderbird.rst:29
 msgid ""
 "`CardBook <https://addons.thunderbird.net/en/thunderbird/addon/cardbook/>`_ "
 "is an advanced alternative to Thunderbird's address book, which supports "
@@ -160,19 +150,19 @@ msgstr ""
 "je pokročilá alternativa k adresáři kontaktů v Thunderbirdu, která podporuje"
 " CardDAV. TbSync a CardBook je možné mít nainstalované vedle sebe."
 
-#: ../../pim/sync_thunderbird.rst:32
+#: ../../pim/sync_thunderbird.rst:31
 msgid "Click the CardBook icon in the upper right corner of Thunderbird:"
 msgstr "Klikněte na ikonu CardBook v pravém horním rohu okna s Thunderbird:"
 
-#: ../../pim/sync_thunderbird.rst:36
+#: ../../pim/sync_thunderbird.rst:35
 msgid "In CardBook:"
 msgstr "V CardBook:"
 
-#: ../../pim/sync_thunderbird.rst:38
+#: ../../pim/sync_thunderbird.rst:37
 msgid "\"Address book > New Address book **Remote** > Next"
 msgstr "\"Adresář kontaktů > Nový adresář **Vzdálený** > Další"
 
-#: ../../pim/sync_thunderbird.rst:39
+#: ../../pim/sync_thunderbird.rst:38
 msgid ""
 "Select **CardDAV**, fill in the address of your Nextcloud server, your user "
 "name and password"
@@ -180,7 +170,7 @@ msgstr ""
 "Vyberte **CardDAV**, vyplňte adresu svého Nextcloud serveru, své uživatelské"
 " jméno a heslo"
 
-#: ../../pim/sync_thunderbird.rst:43
+#: ../../pim/sync_thunderbird.rst:42
 msgid ""
 "Click on \"Validate\", click Next, then choose the name of the address book "
 "and click Next again:"
@@ -188,7 +178,7 @@ msgstr ""
 "Klikněte na „Ověřit“, klikněte na Další, pak zvolte název adresáře kontaktů "
 "a znovu klikněte na další:"
 
-#: ../../pim/sync_thunderbird.rst:47
+#: ../../pim/sync_thunderbird.rst:46
 msgid ""
 "When you are finished, CardBook synchronizes your address books. You can "
 "always trigger a synchronisation manually by clicking \"Synchronize\" in the"
@@ -198,15 +188,15 @@ msgstr ""
 "můžete synchronizaci spustit i ručně kliknutím na „Synchronizovat“ v levém "
 "horním rohu CardBook."
 
-#: ../../pim/sync_thunderbird.rst:52
+#: ../../pim/sync_thunderbird.rst:51
 msgid "The old method: Manually subscribing to calendars"
 msgstr "Původní metoda: ruční přihlašování do kalendářů"
 
-#: ../../pim/sync_thunderbird.rst:53
+#: ../../pim/sync_thunderbird.rst:52
 msgid "This method is only needed if you don't want to install TBSync."
 msgstr "Tato metoda je potřebná pouze pokud nechcete nainstalovat TBSync."
 
-#: ../../pim/sync_thunderbird.rst:55
+#: ../../pim/sync_thunderbird.rst:54
 msgid ""
 "Go to your Nextcloud Calendar and click on the 3 dotted menu for the "
 "calendar that you want to synchronize which will display an URL that looks "
@@ -216,13 +206,13 @@ msgstr ""
 " u kalendáře, který chcete synchronizovat, což zobrazí URL, která vypadá "
 "podobně jako toto:"
 
-#: ../../pim/sync_thunderbird.rst:57
+#: ../../pim/sync_thunderbird.rst:56
 msgid ""
 "``https://cloud.nextcloud.com/remote.php/dav/calendars/daniel/personal/``"
 msgstr ""
 "``https://cloud.nextcloud.com/remote.php/dav/calendars/daniel/personal/``"
 
-#: ../../pim/sync_thunderbird.rst:59
+#: ../../pim/sync_thunderbird.rst:58
 msgid ""
 "Go to the calendar view in Thunderbird and right click in the calendar menu "
 "to the left (where the names of the calendars are) to add a **New "
@@ -232,19 +222,19 @@ msgstr ""
 "tlačítkem na nabídku kalendáře (kde se nacházejí názvy kalendářů) pro "
 "přidání **Nového kalendáře**."
 
-#: ../../pim/sync_thunderbird.rst:61
+#: ../../pim/sync_thunderbird.rst:60
 msgid "Choose **On the Network**:"
 msgstr "Zvolte **Na síti**:"
 
-#: ../../pim/sync_thunderbird.rst:65
+#: ../../pim/sync_thunderbird.rst:64
 msgid "Choose **CalDAV** and fill in the missing information:"
 msgstr "Zvolte **CalDAV** a vyplňte chybějící informace:"
 
-#: ../../pim/sync_thunderbird.rst:70
+#: ../../pim/sync_thunderbird.rst:69
 msgid "Fix for Thunderbird 60"
 msgstr "Oprava pro Thunderbird 60"
 
-#: ../../pim/sync_thunderbird.rst:71
+#: ../../pim/sync_thunderbird.rst:70
 msgid ""
 "If you are still using Thunderbird 60, you need to change a configuration "
 "setting to make CalDAV/CardDAV work around Thunderbird bug `#1468918 "