Start from the part that still opens
Try the homepage, then a normal Movies or TV Shows link. If those open but a saved address does not, search the production again. A missing page is a different problem from the entire site being unavailable.
Search looks empty
Reset the filters and use the full show name. Baddies Midwest is a better starting point than reunion part two. Once the series appears, compare its episode names. For movies with remakes, add a year rather than combining an actor, a country and a rating that may exclude the right film.
The menu or saved list does not respond
Reload once and check whether JavaScript is enabled for this page. You can still use the regular movie listings when interactive search is unavailable. Before clearing browser data, copy your list backup if you can. Private windows and different browser profiles do not share the same saved entries.
A film will not start
Watch now opens viewing choices on JustWatch. If you have already continued to a service, note its name and the error shown there. Check the correct country, edition and account before retrying. Reopening the ViewVault homepage cannot fix an expired session on another service.