After hours upon hours of reading through various forums, i've found a fix which worked for me straight away, Like most reading this forum I was unable to register my card, or use the crysta method and square enix's support was as useful as a fart in a space suit.

So I used a VPN, It's important you find one that is the same country as your bill paying card. Pretty simple to set up following websites instructions. I just hope this helps someone who was in my unfortunate position as I moved country to Portugal from England.

Square enix certainly needs to update its Online payment system, i've never had to try so hard to give a company my money before sheesh.