In case you haven't seen this:
Square Enix Account Management System Technical Difficulties (Aug. 15)
We are currently experiencing the following technical difficulties with the Square Enix Account Management System.
The issue is being addressed, and new updates will follow as additional information becomes available.
We apologize for any inconvenience this may cause.
[Date & Time]
From Aug. 14, 2013 10:00 p.m. (PDT)
The automatic emails sent by the system are being delayed.
Square Enix Account Management System