This is user forum based support… no customer service in the usual sense.
As for your question… there’s limitations to the auto-advance feature built into Plex.
If there’s no user interaction for some time, Plex will stop automatically progressing to the next video.
Auto-advance refers to the countdown timer on the Up Next item, which plays automatically once exhausted. It will be shown whenever there’s an Up Next item, except in the following circumstances:
- If videos have been playing without user intervention for more than two hours, and the video that just completed is > 20 minutes in length. In this case, the Up Next item will still be shown and selected such that a single click plays it.
These considerations are designed to try and make things work smoothly for users in as many scenarios as possible. For instance, these considerations should help:
- prevent having a whole television season get played through if you fall asleep
From:
https://support.plex.tv/articles/202605013-play-queue-post-play-screen/
There’s a feature suggestion to allow for continuous autoplay you can vote for. There’s a relatively large amount of users who already voted for it but Plex usually doesn’t communicate what’s on their roadmap or any ETAs
