Earlier quoted context omitted.
Not everyone with an Apple ID can log in, only paying developers. I have a free developer account and was able to log in. I don't have a @me.com address so I couldn't check Mail, but the rest worked.
Curious. I edited my comment.
Access to technical resources such as pre-release software and associated documentation, and information related to distributing iOS or Mac apps on the App Store are benefits offered to Apple Developer Program members.
Either the Apple ID and password you entered is not associated with an Apple Developer Program, or the Program that you are enrolled in does not have access to this resource.