Received a message announcing my account was disabled

Dear AHBVFCOMANDO, 

You have currently reached the limits of your account. Your forms are disabled now. 

Upgrade your account today to continue using JotForm; receive submissions, collect payments from your users and have more upload space. Upgrading is quick and easy:
http://www.jotform.com/upgrade?username=AHBVFCOMANDO

This is the message I received. Would like some help how to get through this situation. We are experimenting, so don't want to upgrade just yet.

Thank you for contacting us.

Your forms were temporarily disabled since you have reached the monthly SSL submissions limit. We have reset the submissions counter and re-activated your forms. However, this is something that we can do only once per account.

Here is a link to our guide about SSL submissions.

Please feel free to contact us if you need any further assistance.