Switch between Wi-Fi and mobile data first; school, office and public networks often filter film names. Then check the address against the addresses page.
If a page looks broken
Reload it, then clear this site's data in the browser settings. A saved older copy is the usual cause.
If a video will not start
Playback happens inside the network's own player, Netflix, Prime Video, HBO Max and the rest, so start there: close and reopen its app or tab, make sure you are signed in to that network, and if a region notice appears, set your viewing country on BooFlix to where you are now and open Watch now again for the right list.