@TeamYouTube um I ran into a Ad glitch where there is a Ad playing but there is nothing on screen and when it reaches 0 on the count down of the Ad ending it goes to the negative numbers and it keeps going with not stopping, btw this just happened on the App version.
Thanks for the info. Could you try uninstalling the app, restarting your device and reinstalling it to see if that makes a difference? Also, make sure your device is running the most updated OS. Keep us posted