CookBook is a personal recipe manager designed for you to store your own recipes, it is only loaded with a couple of recipes to help get you started. You may be looking for other apps such as BigOven or Yummly that provide you with other people's recipes rather than it being your own personal CookBook.
You can read more about CookBook's features here.
If CookBook is not the app you were looking for both the iOS App Store and Google Play Store offer a refund process. Apple iOS App Store allows you to return an app within 14 days of purchase - you can find out more here for Apple. The Google Play store allow you to return an app within 48 hours of purchase - you can find out more here for Google