To apply a coupon by URL to a LearnDash course using the Coupons & Discounts for LearnDash plugin, simply navigate to the page where users can purchase the course.
In the browser search bar, input Coupon = [name of coupon] at the end of the URL.
After you have typed the coupon name in the search bar, hit Enter.
The page should refresh and there will be a message that reads “Coupon applied. Please refresh this page to access your course”.
Refresh the page again and the customer should be able to access their course.