Good evening After migrating to Joomla 4 my test installation test.compagniadelmantello.it present the following warning message The plugin package that is installed doesn't match your actual Joomla version and is not fully compatible. The package for Joomla 3.x is currently installed but you are running Joomla 4.x, if you have just upgraded your Joomla website from the version 3.x to the version 4.x the plugin must also be upgraded accordingly.To upgrade the plugin, visit our store at https://storejextensions.org, download the package for Joomla 4.x and install it over the current one I've selected all the non core plugin installed on my system and I please you to check if one of them need to be updated to Joomla4 or if it is possible to unistall it. This is an image of the "Extensions: manage" page on my site https://pasteboard.co/D5rQsgmtGZpK.jpg

Thank you for your help