The enter the world button is covered with the "We're currently closed" sign, but the "Game status" section of the homepage says it's currently open, and @isglitchopen never posted a test closed message...
Yes, they were late in closing last night and probably off to the pub as it was Friday night. (and why not). The alpha glitch status is notoriously wrong. If you can't access through Enter The World, you probably can't access.