Multiple SIP logon to Personal Room Not working

Hello Dear Friends,

Recently I can no longer log in multiple times into my personal room from multiple Cisco SX10 Cameras using SIP " . "@zoomcrc.com". I can only do this once. I need multiple Cameras to log in for our Townhall meetings.  One is trained on the speaker and the other for sharing windows and the audience. Used to be fine. We have ZOOM licence for hundreds of users and are heavy users.

Has anything changed?

Thanks