Hello, I purchased two of the chips ahoy products you offer in which both packages had a coupon attached on 7/29/21. Didn't say on package that it couldn't be used that day and didn't expire until 12/31/21. It was purchased at a local Walmart, however it kept saying, unable to be used. Per the employees there, they are unable to manually enter coupons. What is the point of providing coupons if they don't work?