First off - the BK app is horrible~~~twice I tried to use it for the2/$5.00 deal and both times I had to just drive up and order and the app never finished the request. Secondly - twice at the BK on CR 512 in Sebastian, FL I ordered an Impossible Whopper PLAIN (I have allergies to Mayo and other toppings) and BOTH times when I got home (12 miles from BK) the tops of the buns had been scraped of mayo - that's how you get SICK!!! Are you kidding me??? The 2nd time it happened I checked the burgers in the parking lot and brought the products back into the store - the manager never apologized, he just tossed the burgers in the trash and made a replacement. What kind of (UN) customer service are you teaching your staff????