Hi thanks for your reply.
I did get the update notice (on installed version 1.1.0). If I would've checked for updates it did tell me that an Update is available. But it did not recognize the version, only after i deleted the .config/freeter folder.
And like you said: After I deleted the folder the session data was gone (minor issue) and I had to re log into the services, other than that no real issues did occur to me.
Fro me no important data was lost in the process. Even though it was a little confusing in the beginning.