If you alert your waitress that you have a coupon prior to ordering your meal, she would have suggested that you get a full order of pancakes. Always present coupons before ordering, It's not the managers fault, the computer system doesn't accept the coupon if the order does not meet the requirement.
The first time that I visited this IHOP when it first opened I was not impressed. I have been back recently for a carryout breakfast and the customer service has improved as well as how fast it took for them to get my food prepared.
Great breakfast spot. Outstanding, fresh food and terrific prices. Great omelettes, french toast, pancakes and coffee. Friendly staff and great service. Highly recommended!