Start with the last thing that worked
If the homepage opens but a search is empty, the connection is not necessarily the problem. Remove the date, country and format filters, then try the title alone. If that returns the series, add the season number next. A first-release-year filter can exclude a show even when the episode you want aired in that year.
The episode number looks wrong
Compare the episode name and recorded air date. Some services group parts or specials differently. Noxx's guide keeps the production attached to its episode record. It cannot change another service's season arrangement. If a direct episode anchor is unfamiliar, open the full season guide and locate the name.
The player stops after Watch now
Check the viewing service where playback is happening. Try its automatic quality setting and a stable connection. Pause competing transfers before changing several settings at once. If only one episode fails, compare another offer for that production. If every video fails on the device, check the app or browser support.
Your Watchlist is empty
Confirm the browser and profile first. Saves live in local website storage, so another browser will not automatically contain them. A previous backup can restore supported choices. Clearing storage before checking this can remove the very information you wanted to recover.