Minecraft labymod voice chat not working with 1.12.2 forge?

I have a problem with Labymod voice chat in Forge version 1.12.2. When I press the push to talk button I see my name in the top right corner. However, nobody can hear me and I can't hear them. My micro is not shown to the players that it lights up green. I also play with optifine

I didn't have the problem before. I could actually play with the version as normal and voice chat went normally.

Install labymod and reinstall it

I've already done that. I wanted to say that it works with version 1.8.9 but my game always crashes with the version. Therefore 1.12.2