It shows that you talk, but noone hears you, and you hear noone

Steps to reproduce the behavior:

1. Setup a server
2. install the mod

the other one hearing me

• Mod version: voice_chat-1.16.5-0.2.0.6-SNAPSHOT
• Minecraft version: 1.16.5
• Forge version: 1.16.5-36.1.12
• UTeamCore version: u_team_core-1.16.5-3.2.1.195

All mods installed:
https://we.tl/t-KPlvXqNYH9

So a few questions. Is the server hosted on a dedicated host or local network. Are the other people connecting to the server in your local network or at a diffrent place.
You must open / forward the udp port 25566 in your devices / firewalls

The Server is hostet by an dedicatet host, and the users are spread over Germany.

Is the udp port 25566 open?
And is it a managed minecraft server or do you have full control over the server?

Is the udp port 25566 open?
And is it a managed minecraft server or do you have full control over the server?

how do I open it? I have the full control.

Furthermore please link the log in a website that just shows the log like pastebin / gist.github.com

So a few questions. Is the server hosted on a dedicated host or local network. Are the other people connecting to the server in your local network or at a different place.
You must open / forward the udp port 25566 in your devices / firewalls

Furthermore please link the log in a website that just shows the log like pastebin / gist.github.com

Hier ist der Link:
https://pastebin.com/2FBfVfbB

Oh you need java 8 for it to run. Weird that it did not crash but just logs the error

how do I open it? I have the full control.

Look at your firewall.