What happens when I am out of space. I have a live form and a clone that I am using for test. Nothing else?

Your forms are not available, because you have reached your monthly payments limit.

Please note that your forms will get disabled whenever you reach any of your limits. So, you can either wait for the first day of the following month for the counters to reset, or upgrade your account to a paid plan to increase your limits. You may take a look at this guide which explains the account limits and usage: https://www.jotform.com/help/408-Understanding-Your-Account-Usage-and-Limits