I have a problem with the voice chat. Whenever I turn push to talk on it seems to work, but when I join a serveri get an error "Could not start voice capture; suitable capture device not found". If anyone knows how to fix this error please let me know.

I don’t know who’s to fix this but when you do get it fixed turn your mic volume up in settings or no one will be able to hear you

When you connect to a server, check if your microphone is still connected, or if anything changes. If not, it's most likely a problem on the dev's side