No catalog login required
Solarmovies search and My List work without an account here. There is no password to recover for a browser-stored list. If it disappears after changing browsers, look for the original browser profile or restore a backup rather than searching for a sign-in screen.
Private windows and cleared data
Private browsing can discard saved site information when the session closes. Clearing site data can remove it in a normal browser as well. Save a backup before you make those changes. A bookmarked homepage does not contain the list itself.
When another page asks for something
Read the address and action before entering information. The viewing service you choose has its own account process. Solarmovies does not need a browser extension, notification permission or an APK installed before it can show you its movie catalog.
What these checks establish
They explain this site's actual browsing behaviour. They do not certify every similarly named domain, application or advertising page. For an observable failure, use the symptom-based help page. For mobile shortcuts, use the app guide.