Name in Credits - Registration Now Open

[Cyhlraw]

It says that if your name is considered inappropriate, Square Enix reserves the right to say it's not allowed.

and for anyone else having issues with typing in your name there's a tech. support forum made by another user with a special character problem: here

Just read the email taht SE sends to all of us.

Please understand that while we will try our best to incorporate all Legacy Credits requests, we are unable to promise or guarantee your name will be included. Whether or not your name will be included in the credits will be within Square Enix's sole discretion.

So... nothing is guaranteed