How can I set up PayPal Express?

I've already entered all API information for my business's PayPal account. When I go to fill out the JotForm as a test, I get a message that says: You are not signed up to accept payment for digitally delivered goods.

How can I sign up for this? It seems like the last step needed to connect JotForm with my PayPal account.

What is the form you are working on? I check your account, and the only form that shows there has a Purchase Order payment field. Let us know if you still need help.