I cannot complete payment using credit card on my Paypal checkout form

In my form, when I try a test payment or even my own CC, it gives me one of 2 errors. The most recent is a 403 error code (cloudfront error) I am needing this to collect payments for a church event. 

Our apologies for the inconvenience.

We do not have a known issue with our forms today, so that should work. The 403 error is unrelated to the Paypal payment process. I would suggest trying again to see if the issue persists. I have also cleared your forms cache so I hope that helps.

https://www.jotform.com/help/229-How-to-Clear-your-Form-Cache 

Note that with Paypal, you cannot use a card that is already registered to your Paypal account either as funding method or a withdrawal method.