Someone/machine is submitting the same $0 purchase over and over. What can I do?

To avoid getting duplicate submissions or spam submissions, please add a CAPTCHA field to your form. Here's a guide: https://www.jotform.com/help/205-How-to-Add-a-Captcha-Field

You can also prevent multiple submissions in a form using the Unique Submission. Here's a guide: https://www.jotform.com/help/64-How-to-Set-Unique-Submissions-on-a-Form

Hope that helps. If you have questions, please contact us again.