No sign of Google maps navigation data or notifications

There are no notifications for it, despite other apps working

Do you get a notification on your phone's screen?

As far as I can tell, the Google Maps app doesn't provide any API on Android, so Gadgetbridge has to find the notification from Google Maps and then pull the relevant info out of it.

So if you don't see the Google Maps notification, maybe check your Google Maps settings to ensure you hadn't disabled notifications, or check the Android App settings to ensure it has the relevant permissions to show them?

I know if you long-press on the notification on Android you get options to disable it - but I don't know quite how you go about re-enabling after that