My BOGO Mars Blinkies beeped too. I had 10 coupons and since they were beeping and they didn't want to manually enter it she told me it was because it says "once coupon per perchase" I didn't want to argue since I was running late so I left using one coupon. Went to another one and had no problems, cashier entered it manually (it beeped). Just across the street is a SW and they had some blinkies.
Have List --- Wish List: Any Lipton $/1, Lucky Charms/Cheerios $/1, CVS 2/10 or 3/15, Petsmart 3/15, will trade for stamps/postcards.