What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
When someone applied a coupon codes in the payment field, you should know what code is used via email or by going to your form submissions page.
In the email:
In the form submissions page:
But this sees to it that users selected a product item in your form and click "Apply" button.