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.
First of all, if you have not Enable IPN((Instant Payment Notification), I would recommend you to do it: https://www.jotform.com/help/276-How-to-Enable-IPN-for-Paypal
A work around on this would be to create an autoresponder: https://www.jotform.com/help/26-Creating-a-Form-Autoresponder
And add the edit link to the form:
Hope this helps, let us know if you have more questions.