Looking for a guide to solve Natting problem and debug

[FilipStadler]

I have installed mumble web on a debian 11 under proxmox.
Setup done and I also have nginx proxymanager to handle the LTE ssl.
Acces is working fine and it connects to a external mumble server outside my lan.
I can speak when I am on the lan where the mumble web is running but from anywhere else
the connection is not working only the control, chanal shifting, mute and unmute.
The problem maybe the way the mumble-web-proxy is working with my natting also
but the setup is almost woorking - does the mumble-web have to run on the same host as the mumble server ?

[FilipStadler]

OK looks like its webrtc mode that is a problem - setting it to false works here.
Also works behind cloudflared setup ;)