Service was restored to Apple’s Developer Center late last week following a complete shutdown of the service. The Dev Center was closed in response to an intrusion which compromised user information on Apple’s servers.
Though the website is back in action, with features like the Bug Reporter, iOS, Mac and Safari Dev Centers and Certificates, Identifiers & Profiles working, not everything has become available again.
Several sections of the site, like the App Store Resource Center and Technical Support, are still offline. Apple has launched a status page which will indicate to users when the missing sections of the Developer Center come back up.