If the chosen payment method is not working, we recommend that you refresh the page and re-enter your card details or choose a different payment method. However, here are a few more plausible reasons why the payment method you chose does not work:
Credit card
Your credit card must be confirmed either by "Verified by Visa/MasterCard Secure Code" in order for you to purchase online.
This confirmation can be acquired through your bank or in your online banking account. If you have already confirmed your credit card and are still experiencing issues, please contact your bank directly.
PayPal, GooglePay, ApplePay
Please check that your connected bank account is covered. If this is the case, we recommend that you reach out to the payment provider or to your bank directly, who will help you locate the issue.