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 did check your account and found that you have only received 7 submissions but have received 80 uploaded files which is approx 71.27 MB. That is the reason why your account is almost out of space as in free account you can only receive up to 100 MB of uploads.
To free up your upload storage space, you should delete your submission records which has file attachment. Deleting a submission record will also delete the attached file as well resulting in freeing up your upload storage space.
Hope this helps.
Do get back to us if you have any questions.