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.
I see that your form is set to collect custom amount donations:
Please note that coupons are available only for products and subscriptions, where the price for a product or subscription that your users are selecting is set in advance. This means that your Stripe tool should be set to either "Sell Products" or "Sell Subscriptions" as the Payment Type:
Coupons can then reduce the price of the original product, and after creating your products or subscriptions, you can add coupons by simply switching to the Coupons tab of the payment tool:
The following guide provides some more details on how to set up coupons in your form:
Please try it out and let us know whether you need further assistance.
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