If you are seeing a "Card Declined" message, it usually means the charge has been declined by your bank. Banks have an automated system that determines whether or not to accept a charge; this can depend on various factors such as your usual spending habits, the nature of the charge, etc. For example, if you do not have any other subscription payments on that card, this may appear as an out-of-character payment and may have been flagged by their fraud department.
If all the billing and payment information you have provided is correct, but your card is still being declined, please contact your bank to let them know about the subscription charge you are placing with Pixieset. It might also be helpful to let your bank know whether you are on a recurring monthly or annual subscription.
If your bank needs any additional information from Pixieset, please contact support and we'd be happy to help!