Difficulty logging in

I’m using an iPad if it matters. When I try to log in, using the auto-fill for username and password, it redirects to a Facebook log-in. I don’t use that mechanism. I hit “Not now” and it takes me back to the regular login page with a red banner and seems to work eventually, sometimes it takes a couple iterations of this back and forth.

Started a couple of days ago from what I can tell.