Hey there NJApplePie,
Thanks for reaching out to Apple Support Communities. We're happy to provide some assistance.
The actions in this article can help resolve many issues with your Apple TV app not working as expected:
If you can't watch or stream movies and TV shows in the Apple TV app - Apple Support
If the issue persists, you may want to try uninstalling and reinstalling the app on your TV. This can also resolve issues if the issue is specific to the app. If you are unsure on how to do this, contact the manufacturer.
Keep us posted.
Have a great day!