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So as @girish inidicated, due to the way we initially packaged SOGo, we had to publish an entirely new package for Cloudron lately with a new app ID. That one is not possible to update from the old SOGo package to the new one. The reason is the way we used to map users. So @tadeas if you do not have much data in your SOGo installation now, the easiest way would be to simply install SOGo fresh on your Cloudron, this will pick the new package, however note that the login credentials will be different! The new package works based on the mailboxes on the Cloudron, like other PIM apps with email support.
I will see if we can provide an update to the old package though to fix this issue for users of the old package. -