I installed jitsi-meet on my Virtualserver with Ubuntu 16.04LTS. I followed the fast install instructions.
When 3 or more users are in one room there is no Audio or Video. You can only see yourself.
Since as a new user I cannot upload logs here you can find them under https://drive.google.com/file/d/1aPCGFzvUlE_9t9YnaE9hiJ49s-9S9Gx8/view?usp=sharing