your name & address details must be same as on your credit card (if not the same, the transaction may not be accepted by the secure credit card processor).Problems with your on-line transaction?
The secure credit card processing has excellent security checks to ensure protection of our information. Sometimes their measures can be a 'pain', but it's all for our own good!
Here are some suggestions if your transaction doesn't seem to go through...
1) your name & address details must be same as on your credit card (if not the same, the transaction may not be accepted by the secure credit card processor).
...the error screen might look like this =>
2 ) 
know where your AVS (CVV) number is (3 or 4 digits on back of card). For example: 'verified by Visa' - This site supports Verified by Visa - an extra security layer for shopping online. If your financial institution supports Verified by Visa, you may be asked to verify your identity at checkout. this may be a password that you have previously selected at your bank, or during a previous on-line credit card purchase. this only has to be done once.
...the error screen might look like this =>