[_ck_]

I just ran into the problem, they must be fiddling.

Delete all your bbpress.org cookies and you’ll be able to log in again.

Here’s a bookmarklet to zap cookies for just the site you are on it if you don’t want to search through your settings:

https://www.squarefree.com/bookmarklets/zap.html#zap_cookies

(just make sure it’s bbpress.org in your window when you run it)