I bought two physical CE copies of FFXIV:ARR back in late May, one for myself and the other for my brother. The purchase was made from the Square store as a single order, and the confirmation email included two preorder registration codes. I took the first, my brother the second. We have separate user accounts on SE's site, each with its own email address.

Although it took a while, he was eventually successful in registering his preorder code, receiving the 20-character early-access code, and redeeming that, and when he logs into the launcher it shows the "gotta wait for EA to start" message.

Ever since, when I try to register my code I'm getting error 2 (code already used) for a large number of retries, then it's back to error 3. Brother is showing two copies of ARR in the "registered games" section of his profile on na.square-enix.com. I don't have any mention of ARR in my profile, and when I log into the launcher it unsurprisingly shows that I need to register an early-access code before I can continue (to the "wait for EA" screen).

I started a ticket on the issue and am in a queue for live chat, but if I can correct the problem I'll close it and get out of everyone's way. Aside from just waiting and retrying, does anyone have any suggestions?