Course Enrollment button not working

When a user clicks the “enroll” button, it doesn’t do anything. I paid $200 for all the add-ons, and I activated and setup courses, but it’s not working and people cannot enroll. I am hoping you can help without me paying an additional $59 for support! The page is behind the login in. I’ve setup and activated paid posts and it’s using the same payment gateway as registration form which is working fine.