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 am sorry to say that, There is no option to recover deleted submission data in the submission data panel.
But I think you use the Revision History tool and revert your form to a previous saved point. It will restore the previous submission data as well.
User guide: How-to-view-form-revision-history
Another way to regain the submission data is via the submission email.
You can review the submission sent email of your form in your sent email history logs.
User guide: How-to-View-All-Your-Form-Email-History
Let us know if you need further assistance.