My bad. Totally read that site wrong. Anyway, after a little more searching I have found a better answer. http://www.xpats.com/q-a/1.31637 I don't think Maestro have CVV/CSC codes. So, you can't use it.
But it isn't Mastercard? I think you need Visa, Mastercard, American Express or the last one. The way I bought mine was through a pre-paid visa card. I would try that if your card doesn't work.
Ok a couple of points:
In your thread title you say cool-->engineer but the order goes cool-->builder-->engineer and from builder-->engineer, you don't get promoted by posting stuff. And in your second post you ask for a promotion by awesome ranked, but we can't do that. Only pros and owners can...