I did the same thing thinking that it will do what it always does during a major update and just automatically place me back in my home world. They need to at least activate the 'Return to Home World' button. Cause I'm really upset that they just locked me out of my early access until they get their servers stable. I've never had this problem with any other expansion or major update. I always was able to log in cause it automatically placed me back in my home world.