To prevent TV screen burning by some static images or video files, Apple TV has a built-in screensaver feature enabled by default.
This Screen Saver feature may prevent your Kitcast application from playing by enabling the default screensaver instead of your content streaming.
Open Settings on your Apple TV.
Select General.
Choose Screen Saver.
Select Start After.
Choose Never.
That’s it, the Screen Saver won’t interrupt your content again.