A missing or incorrect CVV code is a common issue, please double check in you are getting transaction failed errors.
Another common issue we see is that the address does no match what you have as the cardholder address. Please use a separate billing and shipping address.
For issues arising from the purchase of air compressors, air dryers or filtration please visit our partner that handles those transactions. Make sure that you mention your purchase of Unipipe to Compressor Now Equipment Sales for bundled deals.