I have voice issues in the chatroom.

Kindly check your internet connection and confirm microphone access in your mobile settings.

Please check your internet connection; if it's stable, try exiting and re-entering the chatroom. Also, make sure you have given access to the microphone in your mobile settings.

Please follow the below-mentioned steps to enable the microphone settings on your device:

Go to Settings → Privacy → Microphone.
Click change to enable microphone access for the device in use.
Under “Allow apps to access your microphone”, switch the toggle to the right to allow applications to use the microphone.