How to remove uploaded files from submissions

Please tell me how we can remove uploaded files in order that we may continue to use JOTFORM for free

I have checked your account and it is active. You have received only one submission this month and Upload storage space is empty. 

To clear your Upload storage space you need delete the submissions with uploads in the Submission page of your account.

Note: Delete submissions are permanently deleted and can no longer be restored. 

So I would suggest you to first download your files to your computer and then delete them. 

Hope this will help. Let us know if you need further assistance.