...
Fill in the following four fields:
Android Package Name: the Android package name of the Android app
Android Universal URL: the universal URL to open the Android app (or a specific area of the app)
Android Fallback URL: the fallback link to open if the app cannot be opened
iOS Universal URL: the universal URL to open the iOS app (or a specific area of the app)
iOS Fallback URL: the fallback link to open if the app cannot be opened
...