An invalid currency was selected. plz help

[dinamikooo]

After I enter my information, the next windows always says this.
What do I do?

[Amduscia]

This error happens if you don't choose the length of a subscription.

[dinam1k]

I select 1 month !

[Amduscia]

Doubt that. As I said, this error only appears, if you click right away on order, without selecting the length of your sub.