Each user in own room - no conference established using public server via meet.jitsi.si

I have set up a few meetings now. At first it worked fine but for the last two when I enter the meeting and the other party also enters the meeting we don’t see each other. It does not show anyone else is in the meeting. So each of us is sitting there waiting for the other person to join.
It did this whether I started a meeting or the other person.
I’m using a Chrome Browser on Ubunto 21.04
I also tried with the Jitis client on the same machine with the same result.