I am having problems with coupons on my app. The dollar large fries and one for 29 cents for a shake or mcflurry when you buy one. They disappear during the day but are there after 7pm. I have called support 3 times with no help. This is very frustrating. I used the dollar large fries about 3 times a week. This has been going on for 3 weeks now. I now cut down on my eating at McDonald's without the fry coupon. I have tried multiple things but nothing works.