In order to prevent stolen credit cards from being used on our website, we have increased the strictness of filters that look for suspicious activity. The primary change concerns AVS (Address Verification System), which verifies that your address information matches what your credit card provider has on file. AVS is supported by most credit cards in the United States, United Kingdom, Canada, Australia and New Zealand. 

If the bank issuing your credit card does not support AVS or your billing address differs from what your credit card provider has on file, your card will be declined. If your card supports AVS and is still getting declined, please double check that your address is correct. If you have recently moved, bear in mind that your credit card provider may not yet have your new address in their system. If you do not have access to a card that supports AVS, the only other alternative is to use PayPal.