There is an option way to view the data sent from the target app. It is TraceYou.app.
Instead of using cPanel https://my.copy9.com with a browser (Chrome, Firefox) on a PC or smartphone to view the data, you can use an app called TraceYou which is available on both CH Play and App Store.
Please remember that Copy9 is the application you must install on your target phone (your children's phone) and it is available on Android only.
TraceYou is an application that you can install on YOUR smartphone and it is both available on iOS and Android.