Can not activate notifications

Platform: ( Android)
OS Version: 12.0
Network type: (WiFi / 5G / 4G / 3G / VPN)
Issue type: (Bug)
App version: (2.2 and 2.4)
Build number: (570)
SDK version: (4.1.0)

Describe the Crash or Bug:

I am not able to active Notifications in general settings. So i dont get notifications :(.
When i press the slider I just get a “Error, Unexpected error” pop up.
Futhermore the infobutton beside notifications does not work for me.
Btw, the xxmessager is allowed to give notifications by system(smartphone) settings.

This bug appears since version 1.
I installed the xxMessenger by the .apk.