The domain for their instance got seized. They don’t plan to host another public instance on a different domain but the development still continues you just need to spin up your own instance or use one someone else runs https://movie-web.github.io/docs/instances Edit: I think they still run the backend that can by anyone. You’ll just need to run your own fronted

Source: https://github.com/movie-web/movie-web/issues/936

Believe it got taken down a while a go, have not seen it up for a good couple of weeks myself.