Halo Waypoint wont work on Google Nexus 5 dev

i downloaded Halo Waypoint for Halo Reach from the play-store about a week ago. It wouldn’t let me do anything but give me a OK and cancel option. I uninstalled it and installed it again and the same thing happened. I installed it again today and the same thing happened. What is going on? is there a number i can contact?

We are discontinuing support for the Halo Waypoint mobile apps on Windows Phone, iOS, and Android in order to apply resources to future projects (you can read more about that here). We recommend opening a browser and visiting http://www.HaloWaypoint.com/, which is optimized for mobile devices.