Start with the player you opened
Watch now opens viewing choices, and the selected service delivers the video. If a stream stops, inspect that player's message first. An account restriction, unavailable edition and connection problem need different responses.
Try one change
If the player offers picture settings, lower the quality briefly. Pause competing transfers or test a more stable connection. If it offers a genuine alternative server, follow its own labels. Do not assume an unrelated page labelled mirror is another server for the same film.
Why quality changes by itself
Adaptive bitrate playback can respond to connection conditions by changing the image quality. The content delivery network is usually managed by the service behind the scenes. You generally select the film and edition, not individual delivery servers.
Flixgo does not run an embedded player or hidden backup-server selector. Use quality help for HD and 4K questions, or not-working help if the problem is with search, a page or your saved list.