Voice audio bug
Make sure that the in-game Sound Option, and your Windows/Mac Sound Options match your device.
If you are using Win10, I’ve read there may be some issues with some of the game apps it installs, but since I don’t use Win10, I can’t give the exact suggestions on what to do with them.
If you continue to have issue, you can contact the Tech CS Team via the ‘Support’ link above/below and ‘Submit a Ticket’ for assistance.
Good luck.