Out of upload space

What does it mean out of upload space? I am paying $5.00 per month and I have only 4 forms and a template.

You can also review your account usage limits in your account usage page https://www.jotform.com/myaccount/usage

The 'upload space' limits refers to your submissions uploaded files allocated space.

example:

Related guide:

https://www.jotform.com/help/408-Understanding-Your-Account-Usage-and-Limits