I'm dying into this loop and what ever I do It's won't let me get through. Please see the screenshot and help me out.

I assume this in on your site and not on ours, correct?

If so, as a first step, please disable all 3rd-party apps and plugins, and change the front-end default Theme to one which has not been customized in any way.

Does the same login form with those odd boxers, still show?

Hi Mark, it's my site vuonthotaongo.org and the same login form with those nasty boxers still show. For now I can't go into the forum as its keep crashing.

I'll send you a PM in a moment with some additional steps to try.