Subject says it all.

I can open the app. But the moment I try to make a call or receive a call, the apps goes on a crash loop. I cannot view the contact if who is calling me, i cannot hang up, and I cannot use the phone as the app keeps popping in front and crashing.

Resetting the phone is not an option as I have multiple MFAs configured and not easy to restore.

Anybody with the same problem or any solution for this issue?

I have already cleared the storage for the app, rebooted the phone multiple times and even tried on safe mode.