Are you saying you can't get in at all? I can get in but at first the performance was so bad that I just quit trying to use it for a week or so. It's better now but still sluggish and so far I see no advantage in the new forum format.
The biggest irritation for me is that it insisted on merging my forum account with my adobe store account. It's wiped out my old forum screen name in favor of one it must be deriving from an email account and it won't let me switch back.