My dialer never stops ringing even after I answer the call, and 45 seconds after that the call drops itself.
I alredy tried to restart the app, uninstalled and reinstalled again, and the problem remains the same
This happens because the call is not fully negotiated. We have a F.A.Q. specifically for this issue here: https://www.zoiper.com/en/support/home/article/72/calls_get_disconnected_after_30_seconds