@mrvietnam Maybe, maybe not, but likely a process that takes longer. Either way, a manager would have to come over, look at my phone to see the offer, scroll through the tally on the register to see offer wasn’t applied, manually add a discount with an override, etc. Meanwhile, I’d be holding up the checkout line. Also, I bought other items at the same time, so it wasn’t quite so obvious that the discount didn’t show up.
Checking my receipt before leaving the store is pretty standard procedure regardless since everything I buy generally has some sort of offer (sale price and/or coupon) applicable that warrants verification.