For customers in supported countries outside of the United States, Coinbase supports debit card purchases if your card supports 3D Secure. Some banks require security steps to authorize a purchase using 3D Secure, which may include a text message, a bank-provided security code, or security questions.
After confirming a purchase with your card on Coinbase, you might be redirected to your bank's website to verify the transfer. Coinbase tests for compatibility with most major browsers, but sometimes you might not be correctly redirected to your bank's website. If you can't confirm your purchase with your bank because of this, Coinbase won't be able to complete your order.
To create a successful purchase, we recommend that you:
Use the Chrome browser
Ensure there are no extensions or popup blockers enabled
As another workaround, you can make a purchase using the Coinbase mobile app for iOS or Android.