How to share coupon code?

If I enter in a coupon code through PayPal, where does it show up for people to use?

I have inspected your form and I saw that you added coupon code field inside of your PayPal field. If I understood you correctly you want to know how to share coupon code with your users.

Coupon code is not shown on the form, because everyone would have it then. For example you can send coupon code to your users via email. 

Hope this will help. Let us know if you need further assistance.