In order to resolve this, you should reach out to your bank/card issuer directly for further assistance.
We would also recommend clarifying with your bank if your card is:
- Eligible for international purchases
- Has not reached its limit
- Is enrolled in the 3DSecure program
- The card issuer allows cryptocurrency purchases
You can also try to use a different card provided by another card issuer and see how it goes.
Please be informed that, at the moment, we only accept cards issued by Visa or MasterCard.