i have the same issue i forgot a few of street address information just this i cant told them the correct address but i have all serial number all payment mail that sent to my contact mail in square-enix id
i try to contact support center and tell my problem for 3 times (only i can contact agent not include my spam ticket) but i am not american i cant listen to your speech clearly on phone it should made you annoy me so much
if you look into how i get digital collector's edition and 3 mouths subscription you must acknowledge what i told you is the truth
or just generate register code and send it to my contact email in my id

now im worry about my creditcard that record in my id because i cant login and delete my no.card what you do if i get hack while i cant access to my id please think about it carefully i always change my password to prevent hacker but now i cant do anything
im just normal user just play game and enjoy it

sorry im thai i cant speak english like american
i know you cannot assure to me because i cannot tell the correct information but please considerate...and actions