This post is as useful as snow in a sauna. Either you add some text to make sense of this idiotic title or I will delete it.
Works great on NextCloud for the majority of people. I smell user error
Could also be a bad host, it's unfortunately common that hosts will advertise webdav or nextcloud without ensuring a proper setup.
Well, we don't know anything, since the OP ignored the template and was apparently incapable of explaining what the problem actually is.
Unless there is more info, I will delete this tomorrow, because this topic is worthless.