Ahh.. are you sure you are trying to purchase from the proper regional site? They have three set up... the abbreviations in the site addresses are na, eu , and jp. Make sure you are at the proper root address for the site you are using. (http://na.square-enix.com/us/home versus http://eu.square-enix.com/en/)

It also may not be set up for the LDU codes if you guys have them over there (Canada's equivalent to the Zip+4 codes in the US--narrows down to the particular neighborhood or something like that).