Issue With Sudo to Sudo Calls

All Sudo to Sudo calls (video, handle and Sudo number) ring on the callers side, till you get the voice mail but on the receiving side, it rings twice and hangs up before the receiver can answer. I have done multiple test with multiple people now. I also tested with someone brand new to MySudo and they have the same issue. On further testing, regular non-encrypted calls ring and are able to be answered.

- All users are on iOS 15.3.1

- All users are using the latest MySudo application 

-No VPN on any user

-Uninstalled and reinstalled MySudo