Update 15:40 EST:
Our Senior Technicians have resolved the issues with the Website Builder login. It should now be operating normally. If you continue to experience problems, please open a ticket with our support team. We apologize for any inconvenience this might have caused to you.
Our Senior Technicians are investigating an issue with our Website Builder, which is preventing our customers from logging into the tool. During this time you may not be able to login to the Website Builder from the Dashboard.