JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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.
Coupons can be added to the payment wizard that you want to offer a discount on each/all products either by percentage or fixed amount. Please refer to the guide below that can help you with adding coupons in the payment wizard.
Hope this information helps!