Apple TV 4K watchlist not syncing with AppleTV+ on Amazon Prime

I prefer using AppleTV on Amazon Prime since their watchlist works better. I recently purchased an Apple TV4K so with the free 3 months starting using the Apple app. I flag shows for the watchlist but all will not show up there. Also, annoying th

[Re-Titled by Moderator]

Original Title: AppleTV+ Watchlist