Hello,
Sorry you're having an issue. The VAT information we collect happens before you can get to the PayPal checkout screen, so I'm assuming you were able to complete that part? Was your credit card denied on the screen where you enter you credit card? Is it possible you're being denied by both providers because there's an issue with your payment information?
If you need to reveal any private information about your transaction please email us so we can continue to help you.
Thanks