I suggest you adding an option in setting page to allow users add include apps, Which will transfer data through vpn. Not only an option for exclude apps, And also your option for exclude apps is included mistakes, For example, There is no system apps in the list, And you should allow users to save the options they selected by Go back to the main page of your app, Not a very end ok button on the bottom of this page. That means you should allow users to save the selection by a "back". Or at least Appear in option for Save & Discard. while users will leaving this list page.
I suggest you adding an option in setting page to allow users add include apps, Which will transfer data through vpn. Not only an option for exclude apps, And also your option for exclude apps is included mistakes, For example, There is no system apps in the list, And you should allow users to save the options they selected by Go back to the main page of your app, Not a very end ok button on the bottom of this page. That means you should allow users to save the selection by a "back". Or at least Appear in option for Save & Discard. while users will leaving this list page.