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 believe your are referring to the Save and Continue feature. This feature is largely dependent on the users browser. Since data is stored in the browser, if the cache/cookies are cleared for any reason, so will the data.
For a more permanent method of allowing users to update a submission, I would recommend using an edit submission link in an email autoresponder:
This will allow users to submit the form and return to their specific submission at any time to update their specific submission.