Error when third participants join the room , audio and video stopping for all

Error when third participants join the room , audio and video stopping for all.
when Only 2 in the room everything fine and work and i can see and hear the other, but when the third join everything crash and no video or audio only the chat still work.

I installed jitsi-meet on my own AWS server

Allow public access to UDP/10000

That worked for me thx