the screenshot provided doesn't really tell anything, but anyways, isTestDevice should be TRUE if you want to see how the ads fit in, but it won't earn you anything. When deploying the app you should set it to FALSE.
The reason why this exists is because if you set it to false and compiled it over and over again testing the app and various parts of it, admob might suspect you of being a view bot for the ads and ban you.
The reason why this exists is because if you set it to false and compiled it over and over again testing the app and various parts of it, admob might suspect you of being a view bot for the ads and ban you.
