If you wish to delete a coupon or several coupons, there's a simple way to delete either individual coupons or a bulk of them.
To delete coupons, navigate to the Marketing tab, then go to Coupons.
To delete an individual coupon, you can either toggle the box on the left side of the coupon, and when the Delete button appears, click on it and choose the Delete option again, or instead, simply click on the Delete button on the right.
To delete coupons in bulk, toggle the box below to the Search bar to select all coupons, or toggle the box next to the coupons you want to delete. Then click on the Delete button that appears above the coupons. Finally, click on Delete again.