Looks like I got it resolved now. If I had thought more (and panicked less) I probably could have guessed it was CKE editor. Thank you for the advice. It worked. It is appreciated.
Going to repost, with better description of what I did.
After putting in correct name and password I end up with this:
Oops… whatever you are looking for isn’t here!
400 Bad Request
Invalid request.
Same thing.
Have no idea what I did
Now I can’t access the dashboard at all.
Help !