YueTV stopped working for you ?
A few forums members have been indicated their YueTV stopped working over the last few weeks.
For those are having problems, you can try reinstalling the app itself.
Here are the ones that people had good success with.
If unsure which one you need, check this forum topic http://tvpadtalk.ca/discussion/233/tvpad-4-m418-useful-files-firmware-apps#latest