What is the upload space limit?

I have no submissions and only forms...what is upload space and how am I out of it?

The Upload Space is the space used by File Upload fields in your forms, I've checked your account and found it in a good state and your upload space usage is 0.00MB, for more details about your account limits and usage please check this guide:

https://www.jotform.com/help/408-understanding-your-account-usage-and-limits

Let us know if you need further assistance.