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.
I believe you are talking about the submission edit.
Unfortunately, it is not possible to disable the submission edit of your form. If someone has the edit link of your submission, they will be able to edit it.
If you want to disable the submission editing, you should actually disable your form. The following guide should help you change the status of your form: http://www.jotform.com/help/180-How-to-Change-the-Status-of-Forms
I am anyway sending a feature request to our back end team. We will get back to you as soon as we have any update form them.