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.
First, I would recommend you to download your submissions so you will have a backup of the data in case that you need it, the guide below should help you to download your submissions:
Now to delete a submission you will need to go to the submissions page and then you will be able to delete each submission manually, or delete all submissions at the same time, refer to the image below to know how to do it:
Hope this helps.