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 believe that you basically are asking about deleting uploads to free up file space.
Yes, In order to do that just delete the submission(s) with the attached file(s). This will delete the submission plus it's file to free up usage space so that you have more later on if needed.
You can do this from inside your account with your submission viewer.
In the name of my colleague, you are welcome.
Do let us know if you have any further questions.