You're actually not supposed to be logged in - they're testing the login system as a part of the maintenence - they've said so in the latest news update found here: http://na.finalfantasyxiv.com/lodest...3cbb81ac0bf13a

Quote Originally Posted by FINAL FANTASY XIV Lodestone
[Follow-up]
Regarding the all Worlds maintenance associated with patch 2.1, the World servers have been loaded and the login check is currently being conducted.
To be certain that players are able to log in to all Worlds without any problem, we are being very careful with the login check and is expected to take an extra hour.
We aplogize for any inconvenience this may be causing and thank you for your understanding.