First, identify the failed step
Does the homepage open? Does search return results? Can you open a movie? Does the problem begin only after Watch now? These questions keep a catalog issue separate from a playback issue.
A page or search problem
Reload once, then try a known navigation link. For an empty result, reset filters and enter only the title. Cast and director names need their respective search modes. Interactive controls require JavaScript, while ordinary movie and series pages can still be browsed through links.
A saved-list problem
Check that you are using the same browser and profile. A private window has separate storage, and clearing site data can remove saved entries. Before clearing anything, copy a backup from My List if it is still accessible.
A player problem
If the selected service opens but the film stalls, compare another title on that service, lower the quality temporarily and check the connection. For a missing audio track, inspect the edition rather than resetting your browser. The streaming servers guide explains why a domain, a catalog and a player are different parts of the process.