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.
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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.
Unfortunately we have not received any update form our backend team yet on this feature request. Upon checking the ticket status, I found that one of our developer is already looking into this and we will get back to you as soon as we have any update from them.
An easier way to achieve this is to add an auto-responder email alert in form with edit link. This will send a clickable link in an email to the user who submitted the form. Clicking on the link will allow user to edit their submission. The following guide should help you: https://www.jotform.com/help/40-How-to-Let-Users-Update-Their-Form-Submissions-at-a-Later-Date
Please note that adding auto-responder email alert will send email to all users which submit form irrespective of the payment status.
In order to assist you better, I've moved your question to a different thread, it can be found here: https://www.jotform.com/answers/1051089