Custom Collections Not Updating

Since the OTT (AppleTV, Roku, etc) apps are only meant to play videos/streaming content, you should take care to utilize a saved search that only results in playable content.

Adding a Video On Demand - 'Has VOD' filter to the saved search being utilized should limit results to content viewers could actually watch.

Cablecast Saved Search Filters in the Cablecast UI

Managing Custom Collection in your app Channel at Cloud.cablecast.tv