There are usually three main reasons why a credit card order would be declined on the KJ site.
The first would be insufficient credit limit on your card
The second is possibly that the CVV code on your card is hard to read and the digits entered were not correct
The third is that your card has a different billing address than the shipping address and it was not edited during the ordering process
What can I do if my Paypal payment is declined?
There are a number of reasons it may decline your Paypal account. For further answers concerning your Paypal account it would be best to contact a Paypal representative.