Try this

1. Check your network — switch between Wi‑Fi and cellular.
2. Open the player's More menu, choose Quality, and pick a lower one (or Auto).
3. Force-close the app and reopen the episode.
4. Update to the latest app version.

If only one episode fails, note the series title and episode number when contacting Support.

1080p is marked as a membership option. Selecting it without membership opens the membership prompt instead of changing playback quality.