Q: What payment methods can be used to purchase Square Enix Crysta?
A: You can purchase Square Enix Crysta using a credit card or debit card via ClickandBuy International Ltd., or PayPal® or Ultimate Game Card® via PlaySpan, Inc.
After checking out my SE account only option I got was for click and buy and to be honest I hate that service.
I'd be more happy with paypal.
But thats not available.

BTW from an EU account if that makes a difference.