Unable to start conference after creating meeting

Hi, anyone ever saw this?

After starting a meeting, neither video nor audio connection is being established, and jcofo log keeps yelling all couple of seconds:

Jicofo 2020-05-07 13:30:24.735 INFO: [44] org.jitsi.jicofo.xmpp.FocusComponent.handleConferenceIq().401 Focus request for room: home-meeting@conference.myserver.local

It seems that this happens only with about 5-10% of the users. No commonities amongst them discovered so far…

Thanks for any good idea - I’m lost…
HP.

Anyone?