Android version 6.0.1 was released in 2015 and is no longer receiving any updates from Google. We support a minimum of Android 7.0, as you can see on the Google Play Store here
Please let us know if there's anything further we can help with.
It looks like you've disabled access to mobile data for the AGL app.
To re-enable access to mobile data, open the Settings app on your iPhone and scroll down to and tap AGL. Turn on the Mobile Data switch and try again.
If you're still having issues, please respond here.