Minecraft Confirm without Visa, Mastercard, or American Express?

The following problem:

I wanted to log into minecraft.net on another PC and then wanted the permission of my parents. No trouble, I thought to myself, until I came to the point where Minecraft wanted me 0.10 euro to confirm that my parents are not minors. But then I noticed that up there "with Visa, Mastercard or American Express order" is. Since my mother has a Maestro card, I can forget that! What can I do there?

Nothing