サイトの指示通りにやっていますか？

Order payment / Electronic cash
To pay by credit card please provide your full name and patronymic name (by default the system will ask to use the data which you mentioned when registering on the website online ordering) and select the payment method «VISA, EuroCard / MasterCard» and click "Pay"

Click "Pay". If the data is correct, then the payment will be made within a few seconds. Payment is made directly to the site through the authorization server processing center with a bank card payment system VISA (Visa Classic, Visa Gold, Visa Platinum) and MasterCard (MasterCard Mass, MasterCard Gold, MasterCard Platinum), issued by the banks of the CIS and Baltic States

なんか無理のような・・・。