Wind Mega-no-limit Question

[Flaming Homer]

I've previously registered @ mondowind.it and tried to recharge today. After entering the credit card information, it is asking me for my birth/residence information. I can't seem to put in a non-Italian birth country, "EE" brings up various cities in San Marino, and it keeps rejecting with

Attenzione!

Il codice fiscale non ? congruente con i dati anagrafici inseriti.

Help !