Make the downloads pause when going from WIFI to mobile network.
This should be the case when downloading on mobile network is disabled.
At the moment it continues downloading on the mobile network resulting in unwanted use of mobile data.
The app will automatically stop downloading by default when this happens. Make sure that Downloads is still restricted to WiFi only in the app Settings/Network screen if that’s not the case.
The download notification will then say ‘Waiting for a WiFi connection’