If you are experiencing issues with paying using your US credit card, a popup blocker might be preventing us from redirecting your transaction to your bank for verification.
We use 3D Secure authentication via Stripe.com. 3D Secure (3DS) is an additional layer of security for credit card transactions that helps protect against fraud. During payment, 3DS asks customers to verify their identity with the card issuer. This typically involves being directed to a verification page on your bank’s site where you enter a password linked to the card or a code sent to your phone. You might recognize this method under brand names such as Visa Secure and Mastercard Identity Check.