Check that the card information has been filled in well and verify the following points:
Have the expiration date and CVV number been filled in correctly?
Check your card's funding account and balance.
Each card is linked to a specific funding account (GBP, EUR, or USD). All spending on that card is debited from its assigned account. With automatic conversion enabled, your card can be used in any currency — the amount will be converted from your funding account automatically. If automatic conversion is disabled, your card can only spend in the currency of its assigned account.
To check or change which account your card draws from, go to Cards, select your card, tap Manage card, then Edit funding account.
Check the type of merchant before proceeding with any card transactions, as our cards do not support payments to certain types of businesses, including financial institutions, payment services, and cryptocurrency platforms. We are actively working to expand the range of merchant types accepted for card transactions in the future.
Are the name and billing/shipment addresses correct? For card billing address, you shall use your company registered address.
Is the name registered on the site the same as your full name?
Does the phone number registered for 3DS authentication match yours?
Have you activated an ad blocker or plugin that could prevent the payment from being performed?