I ran out of space. If I delete old forms does that free up space?

I have checked your account and it seems that you are on our Free Plan. On free plan, upload space is limited to 100 MB meaning overall data you have collected via file upload field with your submissions is limited to 100 MB. 

You need to delete your submissions to increase the available upload space. I strongly recommend you to download your submissions before you delete them since once you deleted them recovery will not be possible.

You may check the following link to learn more about downloading your submission:

http://www.jotform.com/help/73-How-to-Download-Form-Submissions-to-Excel-CSV-PDF