Is this post being made by the account that was compromised?

They usually just ban it temporarily and support isn't available on new year.

You can recover your password at https://support.na.square-enix.com/c...t=ID%20Unknown

If they deleted your characters and other information you can submit a data recovery request (but I have seen people say it takes months and they can't do anything in those months because it will all be reverted) http://support.na.square-enix.com/fa...aqtop&c=3&sc=0