Occasionally, PayPal has problems processing credit cards payments for us due to their credit card/address verification process. If you have difficulty paying by credit card directly, then you may have to open a PayPal account to make payment. You may also have to use a different browser. For example, if you are using FireFox, try using Chrome. If you do have problems, then please sent us an email at [email protected] that we are aware of the problem and can take steps to resolve the inconvenience.