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.
You can delete all the submissions in the Submissions page. Please refer to this guide: https://www.jotform.com/help/377-How-to-Delete-Form-Submission-Data
The guide also explains how you can filter the submissions so that you can delete form submissions in a specific time frame.
Please note that deleting submission data is irreversible and will permanently remove it in our servers.
Hope that helps. Thank you.