Error when trying to pay with a credit card using PayPal

I have created a Jotform and integrated it with a PayPal business account.  After selecting my products and clicking the payment/checkout button it takes me to the PayPal site where I enter my credit card information.  But it doesn't accept any of my credit cards that I attempt to pay with.  All of the credit cards I've tried are valid and I've attempted to enter the information multiple times, but every time I receive the following error...

"The card you entered cannot be used for this payment. Please enter a different credit or debit card number."

Problem solved.  My credit cards were already associated with another paypal account.