Crap.
New system does not let you use a coupon if the product is on sale
Bought old spice deodorant. On sale for 3.99
Gave cashier a coupon and system changed the product price to regular (7.29) minus a 75 cent coupon.
Happened with other products too.
Cashier made an error and redid my entire transaction even though I told her I would lose the points given to me on the previous one. So I just wasted half an hour to spend more money and lose points. Train your staff shoppers.