Can't log into halo Waypoint app

I can’t log into the Halo Waypoint app. I get an error message everytime I try to. I just want to create some custom challenges for Reach. Is anyone else having this problem

Which App, The iOS, Android, WP7 or Console one?

Also, what is the exact error you are getting?

I’m using the ipad app.

> I’m using the ipad app.

Have you tried deleting the app, turning the iPad off, turning it back on and reinstalling Halo Waypoint?

If so, try syncing with iTunes.