Completed or updated/upgraded courses
Same course : My Page → My Classroom → Completed Courses → Click 'Retake' → Get 40% coupon
Updated courses : My Page → Customer Service → 1:1 inquiry → Admin issues coupon
1. Coupon must be issued and applied before purchase, no retroactive discounts.
2.If the coupon doesn't work, request it via 1:1 inquiry for updated courses.