Poor video quality may indicate a weak WiFi signal. Make sure you’re in an area of good coverage to have the best signal to stream.
What you can do
Additionally, make sure you don't have the volume on your device turned off, and that your headphones aren’t clicked to block the audio signal.
Next, confirm your operating system. If you have Apple software version 4.3 or higher loaded on your iPad, the slider button on the top right of your iPad acts as a mute button. Slide the button to release the mute.
If you are still having trouble with the XFINITY TV Remote app, please check these top tips.