Thank you for making demo server happen!
We just tested it internally, my PopOS/Ubuntu worked like a charm on Firefox.
However Hannah, the other Animorph, encountered to issues on Mac+Firefox:
Could not enable their microphone (they could not hear me either), we could do only text chat.
The error was
connection failure ICE error 1007, please find screenshot below.
After the error system would still try to connect to the echo test to no avail. When Hannah used Chrome it worked at first attempt though
1007would pop up again next time round, but was fine after refreshing.
Hannah encountered another error when trying to launch video on Firefox
Media could not reach the server [error 1020]Did work on Chrome, will spare you the screenshot.
Hope this is somewhat relevant, thank you for all your work on this!