Sound and image missing


We are using for our school online classrooms since 16/03/2020.
It was working fine until few days ago.
We are now recording a lot of issues of sound and image missing.


  1. Is there a known issue on the server-side that I can share to all the teachers and students ?
  2. Is there some kind of “heartbeat” page on the site that shows how stable the system is and the issues it could have ?

Thanks in advance.