Secure rooms , guest lost video and audio

good morning,
I have installed and configured jitsi on a debian 9 server, it works perfectly, it is behind a firewall so use this note, https://github.com/jitsi/jitsi-meet/blob/master/doc/quick-install.md # advanced-configuration, to avoid problems with more than two users,
I have applied room creator security, https://github.com/jitsi/jicofo/blob/master/README.md#secure-domain, but the moment I get to step
var config = {
hosts: {
// XMPP domain.
domain: ‘srv.domain.org’,
anonymousdomain: ‘guest.srv.domain.org’,
The security part works, but the problem returns with more than two users connected, when the third one enters, video and audio are lost.
simply commenting the line “anonymousdomain: ‘guest.srv.domain.org’,” can connect more than 3 people correctly … but with a password, can someone help me?