More than 2 people camera/sound disable error

Hello all, so just reading through all issues on this question and applied everything but can not locate issue.

All ports open, firwall open, host linked, certificate sorted, even applicaion connects and do the job up to 2 cameras. But if there are more than two all crashes.

Settep up everything on: ubuntu 18.04 x86 64 with apache2 server

Will try fresh set up once again with nginx. But already made 5 fresh reinstalls and can not locate issue.

Could you please help?

Has somebody could give full working jicofo, video bridge and prosody sip communicators files?