Originally Posted by Fbone
In the "international" thread geertm says he/she uses a Dutch credit card so it must let you download with a non-US credit card ... somehow. May need to compare geertm's settings with yours.
Sorry, you're having this trouble. Only thing I can suggest is removing the default card and then adding it back in. It's previously strange behavior may have something to do with it.
You can use a non-US credit card, but you have to register a valid US address as billling address (the addres is not verified with the credit card company so this will work fine).