Weird! Double check the fine print and make sure the coupon is applicable. Some possible explanations…
(1) The coupon might be for new subscribers only.
(2) The coupon might only apply to certain plans.
(3) The coupon might not be applicable on a gift subscription.
(4) The coupon might just be a scrap of paper with FREE written on it in sharpie. (Your dog does this sometimes to try and get another BarkBox.)
If you’ve checked the deets and there’s still no good explanation, email email@example.com and we'll see if we can get to the bottom of it!