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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.