Hello CrashOverride,
Thank you for reaching out to Apple Support Communities.
These steps can help you with Up next:
"See what’s up next
The Up Next row displays content you’ve already started to watch or plan to watch.
- In the Watch Now screen of the Apple TV app
, navigate to the Up Next row, then navigate left or right to see shows you’ve recently watched or added to Up Next. - Shows and movies appear in the order you’re most likely to want to watch them. For example, when a TV episode is finished, the next episode automatically appears in Up Next. And if you’ve already caught up on a show, whenever a new episode becomes available, it immediately shows up in the beginning of the Up Next row.
- If you have a Mac, iPhone, iPad, or iPod touch and are signed in with the same Apple ID you use for the Apple TV app, your viewing progress and episode selection stay in sync in the Apple TV app on those devices. For example, you can start watching a show on your Apple TV app and finish watching it on iPad, or vice versa.
Add a movie or TV show to Up Next
- In the Watch Now screen of the Apple TV app
, select an item to see its rating, description, available channels, and purchase or rental information. - Select Add to Up Next.
- The Add to Up Next button changes to In Up Next, indicating that the item is added."
More details can be found here: Watch Now in the Apple TV app
If the issue persists, can you provide a few more details? When did you first notice this? Does this work on any of your other devices? Also, what is your exact tvOS version?
Cheers!