I am wondering how to log in to BC, as well. Is there a login page I'm not aware of besides this?
I remember reading that BC was no longer included in a CC membership as of May 1, 2015; however, I've been a CC member longer than that.
Tony, the login button is working for me. I'm guessing it was a temporary issue.
Jaylitten, you can either click the login button on Adobe Business Catalyst, or add '/admin' to the end of any of your BC domains.