AppleTV screensaver update

I'm developing an iOS app that has a custom screensaver for AppleTV (4K) as a companion, the problem is that I changed the AppleTV's URL for the video feed to one of my servers, but once I changed it the first time I can't change it again or make it update the screensaver when the JSON content changes.

I looked up everywhere but it appears to be no documentation at all regarding this topic.


Does anyone has any knowledge about this?