Enter the code you got from the Coca-Cola app into the McDonald's app. No labels (a blank value): The app is running on a device that has signs of attack (such as API hooking) or system compromise (such as being rooted), or the app is not running on a physical device (such as an emulator that does not pass Google Play integrity checks). This app has a 2,8/5 rating and you have to keep scrolling them to find positive ones, from the very few users who managed to get the app running.