Need a simple e-learning website where users download the course directly without watching on our platform

- Need a website where user will download the Course after paying the amount - A landing page with the course details - Taking the user details if they are purchasing the course - Generating a downloadable link where users can download the course videos and this link should be expired in 24-48 horus - The videos in the course should has a unique watermark to every user (May be their invoice id numer) - Discount code option while purchasing