While it did work on /e/, my experience with Ring/Jami has been hit and miss in general sadly. In my opinion there are better options out there: Session (New), Signal (Scroll down the page to get non-google APK), Telegram FOSS.
I also tried Jami but didn’t like it.
If you don’t bother with a centralized server to manage the connections, like @b3pio said, Session, Signal and Telegram FOSS are good alternatives (technically speaking).
I liked Twinme better but it’s not well know, I cannot say is reliable in terms of privacy.
You can find Session, Signal and Twinme in the official /e/ Apps Store and Telegram FOSS on F-Droid.