diff --git a/source/contact/contact.rst b/source/contact/contact.rst
index 98d1dccb9a52411fdb8e9e2b476a28ff680f21bd..ac2b1f927545bfe1bd0da6d305f04572d1918272 100644
--- a/source/contact/contact.rst
+++ b/source/contact/contact.rst
@@ -5,9 +5,9 @@ Contact Us
 We are also contactable on:
 
 * Mailing list: `<https://lists.fusiondirectory.org/wws/lists>`__
-* IRC: #fusiondirectory on irc.libera.chat `<irc://irc.libera.chat/fusiondirectory>`__
 
 Follow Us
 
-* On twitter: https://twitter.com/fusiondirectory
 * On linkedin: https://www.linkedin.com/company/fusiondirectory
+* on Mastodon: @fusiondirectory@pouet.chapril.org
+
diff --git a/source/fusiondirectory/prerequisite/prerequisite.rst b/source/fusiondirectory/prerequisite/prerequisite.rst
index 129b9ef8aaca4007c29a3a5416862a521c6a604d..b0977b0f0f7871fc7a7bc44881a7661eed875d7d 100644
--- a/source/fusiondirectory/prerequisite/prerequisite.rst
+++ b/source/fusiondirectory/prerequisite/prerequisite.rst
@@ -6,7 +6,6 @@ FusionDirectory is a Web application that will need:
 * a webserver;
 * PHP;
 * an ldap server;
-* perl
 
 Web server
 ----------
@@ -22,10 +21,6 @@ PHP
 
 As of 1.4 release, FusionDirectory requires `PHP <https://www.php.net>`_ 7.3 or 7.4.
 
-.. note::
-
-   We recommand to use the most recent stable PHP release for better performances.
-
 Mandatory extensions
 ^^^^^^^^^^^^^^^^^^^^
 
@@ -71,7 +66,7 @@ PHP configuration file (``php.ini``) must be adapted to reflect following variab
 
     expose_php = Off;
     implicit_flush = Off;
-    memory_limit = 128M ;      // max memory limit
+    memory_limit = 512M ;      // max memory limit
     max_execution_time = 30 ;  // not mandatory but adviced
     session.auto_start = off ;
 
diff --git a/source/fusiondirectory/release/releasepolicy.rst b/source/fusiondirectory/release/releasepolicy.rst
index 25758514124b6bab2ae555deb90826870a1a1b9e..fe68007c0d06226d6dd595ba337a0e0f0355ab2d 100644
--- a/source/fusiondirectory/release/releasepolicy.rst
+++ b/source/fusiondirectory/release/releasepolicy.rst
@@ -17,7 +17,7 @@ Major Release
 * Can remove attributes or objectclasses from the schema only if they were declared OBSOLETE in the previous major release.
 * Can put **OBSOLETE** attributes and classes which are no longer used by the code.
 * Two 2 major releases are needed before removing OBSOLETE attributes and objectClass.
-* Can provide migration scripts in fusiondirectory-setup if needed for those, and/or migration instructions in the documentation.
+* Can provide migration options in fusiondirectory-migration-manager if needed for those, and/or migration instructions in the documentation.
 * Have to provide migration instruction from previous major release.
 
 Minor release
diff --git a/source/security/gpg.rst b/source/security/gpg.rst
index dbf9255b112ff789f5b80d3529c9243783299093..5d10279e4efb35b17cea71591f21ee0580fdbb47 100644
--- a/source/security/gpg.rst
+++ b/source/security/gpg.rst
@@ -1,7 +1,7 @@
 Digital signature
 -----------------
 
-Our official packages for Debian and Centos/RHEL are signed with the official gpg
+Our official packages for Debian and Centos are signed with the official gpg
 key of the project.
 
 Official gpg key
@@ -13,15 +13,5 @@ Official gpg key
        A94DE63F2EDB5F0DC0785EBBD744D55EACDA69FF
  uid                  [  totale ] FusionDirectory Project Signing Key <contact@fusiondirectory.org>
 
-Our official development packages for Debian and Centos/RHEL are signed with the official development gpg
+Our official development packages for Debian, Ubuntu and Centos are signed with the official development gpg
 key of the project.
-
-Development gpg key
-^^^^^^^^^^^^^^^^^^^
-
-.. code-block:: shell
-
- pub   rsa2048/0xADD3A1B88B29AE4A 2014-02-25 [SC]
-       8ABF887BF6254D6F57B82069ADD3A1B88B29AE4A
- uid                  [ totale] FusionDirectory Packagers <fusiondirectory-packages@lists.fusiondirectory.org>
-
diff --git a/source/support/community.rst b/source/support/community.rst
index c279c5037b739b184122058d4fb4af3aa8224fbd..821c637906c3aaa36af33dbbf2c1a1e2eb6a8e89 100644
--- a/source/support/community.rst
+++ b/source/support/community.rst
@@ -1,7 +1,6 @@
 Community support
 =================
 
-For any question regarding FusionDirectory support (installation, configuration, usage, etc…), the preferred way to get some support is through the `mailing list`_  or `irc`_.
+For any question regarding FusionDirectory support (installation, configuration, usage, etc…), the preferred way to get some support is through the `mailing list`_
 
-.. _irc : irc://irc.libera.chat/fusiondirectory
 .. _mailing list : https://lists.fusiondirectory.org/wws/info/users
diff --git a/source/support/professional.rst b/source/support/professional.rst
index 714baa2c6656e1729cf16de93841f8e4a195d300..99d10a7a8de94a8198c9cf354cc074dd891135cd 100644
--- a/source/support/professional.rst
+++ b/source/support/professional.rst
@@ -1,31 +1,21 @@
 Professional paid support
 =========================
 
-`FusionDirectory`_ helps you keep FusionDirectory running smoothly
+FusionDirectory Subscriptions helps you keep FusionDirectory running smoothly
 
-Why choose FusionDirectory ?
+Why choose FusionDirectory Subscriptions ?
 
-* You are the publishers of FusionDirectory.
-* We have over 16 years experience in the support of LDAP directories and applications directory management.
+* We are the publishers of FusionDirectory.
+* We have over 24 years experience in the support of LDAP directories and applications directory management.
 * We support and maintains OpenLDAP architectures for various entities from small to very big on a daily basis
-* We maintain and develop the `PHP LDAP`_ module
+* We helped maintain and develop the `PHP LDAP`_ module
 
-You are sure to get :
+More information on our subscriptions
 
-* Answers to your questions about FusionDirectory by phone, email or web,
-* Packages containing bug fixes between two stable versions
-* Assistance for the development of FusionDirectory modules tailored to your needs,
-* Assistance on the update of FusionDirectory
-* A technician on site if the situation requires.
+* Get `service subscriptions for your FusionDirectory`_ instance
+* Get `trainings for your daily use`_
 
-Support Options :
+.. _service subscriptions for your FusionDirectory : https://www.fusiondirectory.org/en/iam-tool-service-subscriptions/
+.. _trainings for your daily use : https://www.fusiondirectory.org/en/trainings/
 
-* Get `support for your FusionDirectory`_ instance
-* Get `training for your daily use`_ of FusionDirectory
-* Get `support on specialized plugins`_ of FusionDirectory
-
-.. _FusionDirectory : https://www.fusiondirectory.org/
-.. _support for your FusionDirectory : https://www.fusiondirectory.org/en/our-support-offers/
-.. _training for your daily use : https://www.fusiondirectory.org/en/training/
-.. _support on specialized plugins : https://www.fusiondirectory.org/en/support-specialized-plugins/
 .. _PHP LDAP : https://www.php.net/manual/en/book.ldap.php