Hi, currently I am using a mic separated from my headset, but the problem is that the game seems to identify the headset and not the mic, thus making impossible to use the voice chat. Does anyone know a solution?(I can’t use the mic of my bt headset because if I do so the audio gets screwed up; just in case the model is sennheiser hd440 bt)
Edit:I’ve found the solution. just had to select audio devices-communication devices
Thank you for updating your thread, Widowmemer, I’m happy to read that you managed to rule out the cause of the issue!
To all readers that might stumble into this thread with a similar issue: guys, make sure you try troubleshooting steps here! Quite often these issues are linked to settings or to an incorrect device being selected - our support article will help you to figure out the cause of the problem. 
All the best!
Feedback? Click here! Blizzard EU - Customer Service Forum Representatives Surveys - Vyraneer