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 the test submissions with uploaded files in your My Forms View Submission page.
user guide: How-to-view-Submissions
Please take note that deleted submission data are permanentely gone and cannot be restored. So make sure to know which submissions you are deleting and download a copy as well if you have plan to use them later.
Let us know if you need further assistance.