PayPal won't accept my payments

I am trying to verify that my form works properly. I have tried to process payments using PayPal 3 times. Each time I get the error message "Sorry, we can't complete your purchase at this time. Please return to the merchant and choose another way to pay."

I don't know if this is a JotForm integration issue or a PayPal issue. What am I supposed to do now?

That's most probably with your Paypal account.

I cloned your form here, placed my Paypal account and it is redirecting to Paypal's checkout page. https://form.jotform.com/81296546053965

I suggest checking this post from Paypal community which is related to this. They've provided ways to resolve the issue https://www.paypal-community.com/t5/Payments/Sorry-we-can-t-complete-your-purchase-at-this-time-Please-return/m-p/1440234#M2415. You can also contact Paypal support for further assistance.