What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
I did check your form and found that you have not added any PayPal API username & password. You will have to add your PayPal details and then click in the next button to see your products. Please check the screenshot below how to edit your PayPal product :
Hope this helps.
Do get back to us if you have any questions.