JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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.
If I understand your question correctly, you want to allow your users to edit their own submission data. Is that correct?
Yes it is possible to achieve your requirement by taking advantage of our "Edit Link" feature. Please take a look at the following guide which should help you: https://www.jotform.com/help/40-How-to-Let-Users-Update-Their-Form-Submissions-at-a-Later-Date
Hope this helps.
Do get back to us if you have any questions.