Mogu Mogu earring code restriction

Why is this item code region locked when it was stated absolutely nowhere (the purchase website, the product information page, or even on the card itself) I would like to redeem this code is there a way to do this through the support center or something because one would expect when buying a $550+ box set you would be given everything that is included including the mogu mogu earrings.

This is a first for me as I have attached plenty of Japanese regional codes to my account before for FFXI (and I just attached a Japan purchased copy of before meteors dalamud pet to the account) so why is it this one and only code is not region free ?

Woo...they fixed it!!! Now you can contact them and they will convert the codes for you. :)