To all you who are experiencing this: Federate!
Nope, no way to do group video calls yet. Which is funny given that Jitsi Meet is based on Prosody and uses XMPP internally. If they cooperated we could have a working solution soon but sadly Jitsi people are not interested in interop: https://github.com/jitsi/jitsi-meet/issues/6235
Some teams are not put off by that though: https://dino.im/blog/2020/08/setting-out-for-calls-and-conferences/
QOTO: Question Others to Teach Ourselves. A STEM-oriented instance.
An inclusive free speech instance.
All cultures and opinions welcome.
Explicit hate speech and harassment strictly forbidden.
We federate with all servers: we don't block any servers.