This is an issue in Android 6.0. There should be no issue if the Android version is before 6.0. As our App needs to send call to driver in a pop up window, Android 6.0 needs to set a new permission. In the following screenshot, please make sure “Permit drawing over other apps” is “ON”.
The app needs a few permissions to function. To set permission, you need to say “ALLOW” for all permissions. If you have a hard time to do this as the “Screen overlay detected” blocking the installation. You can go to “Settings” -> “Applications” -> “Application Manager” -> “Driver App” -> “App Permissions”, then you can turn on the permission per the following screen.