FWIW, I just installed all of this and tested it. Works great, instructions are clear. The yaml edits referenced by @msbt were quite helpful on the external-registration side.
Look forward to the eventual Jitsi package.
This isn't so much a problem I need help with, but rather sharing something I didn't immediately find in a site search. I fixed my own problem, so now it's a suggestion.
I experienced a certificate error for the domain upon which my Cloudron control panel happily resides. No amount of irritable gesticulating could make it work -- I'd try to force certificate renewals only to see the control panel go offline and prove unable to connect. Logs weren't especially useful, either. I had to reboot the server from the shell to make things work again.
When I tried updating one specific app and it gave me a 500 error on the Digital Ocean side, it occurred to me that the API credentials must have expired. Which, as it happens, proved to be the case. I generated a new set, added it, and viola! life is good.
I wonder if we can have a better way of uncovering expired DNS API connections? Perhaps a check before a certificate upgrade that flags a plain-English error?