76% of Coupon Codes Work at Checkout, but Most Failures Trace Back to Terms Shoppers Never Read, CouponDopa Study Finds

Study Finds 76% of Coupon Codes Work at Checkout NEW YORK, July 18, 2026 /PRNewswire-PRWeb/ -- Multi-country research across 11 regions finds that most coupon code failures were not due to expired codes, but to terms and conditions shoppers did not check before checkout. Our research...