Since the update on last Tuesday Talk doesn’t work any more across networks. Only within one local network it still works.
I use the default TURN server stun.nextcloud.com:443
in version 18.0.3 it worked fine across different Networks.
I tried it in two different unrelated NC installations, everywhere I get the same error:
“Could not establish a connection with at least one participant. A TURN server might be needed for your scenario.”
I posted a bugreport here: https://github.com/nextcloud/spreed/issues/3475