No sound during phone calls and google assistant

When I call someone or recieve call, my smartwatch doesn't play any sound. Other side doesnt hear me too. Same with google assistant, it triggers alright, but it acts like my mic is muted. I don't know how to test if the mic is working, but speaker works just fine in other situations. Any sugestions? Maybe there is a way to downgrade software to previous version just to check? I tried to pair with 2 other phones and issue still exist so Im sure its watch related. Watch is D2 X10 air. Will appreciate any help!