Locate the transition that interrupted viewing
There is a practical difference between episode two following episode one and an unrelated film starting after a completed movie. Before changing preferences, note which transition occurred. Someone who wants to watch a complete series consecutively may still want the app to stop once the series ends. A single description such as “autoplay is off” does not identify which preference was actually changed.
Inspect Apple’s distinct controls
Apple documents Play Next Episode for consecutive episodes and Play a Recommendation for content suggested after a series, film or sporting event. Autoplay Video Sound separately controls sound in automatically playing background videos, previews and trailers. These settings are found in the supported living-room app’s Settings area; Apple cautions that features can vary by region and device.
Use the control matching the intended stopping point
For example, if an unrelated recommendation began after a movie, review Play a Recommendation rather than repeatedly toggling the next-episode option. If the nuisance is a noisy trailer while browsing, review preview sound instead. Record the original values before changing them and ask the viewer which behaviour they actually prefer. Keeping the series option on may be entirely intentional.
Test the same type of transition
A silent browsing trailer does not prove the app will stop at the end of a movie. Check the setting you selected and compare the same type of event in an ordinary viewing session. Avoid fast-forwarding through unfamiliar titles merely to trigger transitions if that would spoil the programme. A clear description of the transition and saved control is sufficient evidence for a focused support request.
Questions, answered
Does Play Next Episode also govern unrelated recommendations?
Apple documents a separate Play a Recommendation preference for that transition.