What if my Submission Limit has been reached?

I have 1000 submission limit, what happen when 1001Th submit the form?

and how can i added my submission limit?

Once you reach your submission limit, your forms will be disabled for the meantime. It will only be reactivated until you either upgrade your account or wait for the next month when your counter resets to zero.

By the way, you will still receive the 1001 submissions as this will trigger the submission limit. Also, Jotform will give you an option or 24 hours to upgrade your account to a higher-tier plan so you can continue using your forms.

To know the current usage and limits of your account, I suggest you check this guide: Understanding-Your-Account-Usage-and-Limits