Video And Audio dont show to other participants

mediasoup-demo
1

Greetings.
I’m trying to deploy a demo to a Hetzner server.
Everything basically installed and started, but there is one problem.
Other participants do not receive video and audio (for example, the video resolution is indicated as 0*0) despite the fact that the data in “SEND TRANSPORT REMOTE STATS” looks quite good - https://i.imgur.com/j7dX2kt.png.

Additional information regarding configuration
If I use 0.0.0.0 - the data in “SEND TRANSPORT REMOTE STATS” is always 0
If I use 127.0.0.1 - I cannot connect to the websocket
If I use an external IP address - 116.202.. - the data in “SEND TRANSPORT REMOTE STATS” looks good but other users do not receive video and audio.

I’m not good at setting up a server, so I apologize in advance if my question looks stupid.

2

And I forgot to mention one more oddity. If we connect 2 times from one device, everything works fine. But if another device is connected, no information is received from it.