Cannot Login to Buddypress.org to View Themes in Action?

Hello,

I am trying to access your site http://www.buddypress.org to view the" Themes in Action." When I go to login it takes me to a wordpress login page. I enter my username and password that I use to login to wpmudev.org but it does not recognize me.

Please advise what login's I need to access this page, and where I need to obtain them.

Thank You,