I like to also update this thread with the information that the Cheogram app has a very neat GUI implementation of the commands needed to manage your VOIP account. It’s all really seemless at this point. Also the app has integration with standard phone app so you can even configure your normal phone to call using your JMP number. That for me is game changing as it is stable and reminds of the days when SIP was an option in the android dialer.
In my experience now JMP works better than MySudo on Android.