are you familiar with how to view the logcat logs on an adroid device. You need to install Android studio and connect your device via USB with USB debugging enabled in the developer options
Note: On Android 4.2 and newer, Developer options is hidden by default. To make it available, go to Settings > About phone and tap Build number seven times. Return to the previous screen to find Developer options.
create a new project in android studio
go to View - Tool Windows - Android
from the Android pane you can see the logcat logs
If you can provide this we can see if the app is trying to send data and to where
Rich