Xamarin Android Push Notifications not working

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I'm trying to get Urban Airship to work with my Android Xamarin app. I was able to successfully get iOS running easily, by following the instructions here: https://components.xamarin.com/gettingstarted/urbanairship

For android, I did not get any push notifications no matter what I did. I referenced the manifest config from this sample projecthttps://github.com/xamarin/monodroid-samples/tree/master/UrbanAirship but it looks a little outdated for the latest Xamarin bindings.

I tried adding an IntentReceiver in my app as well, and none of my methods are being called.