Prime Video app. For example: I bought Snowfall Season 3. Episode 1 refuses to play. Spinning ball then "… contact Amazon Video customer service …" The rest of the episodes play, but need to watch ep 1 first. Happening on a few performances.
Bought Amazon Channels Showtime, Starz, CBS All Access with 50% off. Many showtime episodes of shows will not play. Recently tried to watch Chi Season 2. Random episodes just won't play. Spinning of death of death then … Same with Starz and CBS.
All these episodes play nice on my Shield TV which is in the kitchen. They just won't play on Apple TV 4K. I have contacted both Amazon support and Apple support. Apple says it's an Amazon problem. Amazon has escalated it, but nothing after a week. We did all the usual troubleshooting and uninstalling again …