Thanks for reaching out wenniparwesti,
It sounds like you're having trouble running an app on your Apple TV. We can help.
First, let's make sure you are on the current version of tvOS. The current version is tvOS 16.4.1. If you are on a previous version, you can follow these steps to Update your Apple TV:
Update your Apple TV manually
1. Go to Settings > System > Software Updates and select Update Software.
2. If there's an update, select Download and Install.
3. Wait for your Apple TV to download the update. Keep your Apple TV connected and plugged in to power until the update is complete.
After the update downloads, your Apple TV will restart, prepare the update, then install it. When the update is complete, your Apple TV will automatically restart again.
Give that a try, and see if there is any change afterward.
We are here for you.