I can confirm that the Reebok coupon code issued in the Benefits tab of Samsung Members does not work on Reebok Canada site. Accessing the site directly or clicking on the link provided, it gives an unknown error when using the code.
Just providing a screenshot of what happens when the code provided by Samsung Members Benefits is applied at Reebok Canada. It comes back as coupon code unknown. Hope this gets resolved for members who are trying to apply benefit codes for discounts.