Why am I receiving out of space message where as I have only two form submissions?

Currently I am using the free jotform service. I have had 2 form submissions but received a notice that I had reached my monthly maximum and would need to upgrade or my form would be disabled. 

I have checked your account and found that, you have crossed your limit of payment based submission which is 1 payment in each month for free subscription.

Both of your submissions are payment based submissions and you are now over limit.

Your quota will be refill on 1st January, 2018.

To know more about your usage, please refer to this guide:

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

If you have any further query, please let us know.