Hey @IWantMyMTV,
Welcome back to the community and thanks for taking the time to post.
I'm sorry to hear of the issues that you're having with the YouTube app, has rebooting the box resolved the issues that you're having with the app?
If not, please can you clear the cache on your TV box, you can do this by doing this Home > Thumbs down > Thumbs up > Play > Play > Play.
Please let us know, if your issues have been resolved or if you need further help.
Regards,
Steven_L