Is anyone else having thois issue? I am unable to subscribe to any courses in iTunes U after upgrading to iOS 6.0 GM release. After pressing on "Subscribe Free" the button changes to "Get Course" but doesn't respond to any taps afterwards.
This is actually happening on both my phone (iPhone 4) and my iPad (New iPad 3rd gen). I've tried force closing the app, rebooting, and even deleting and re-downloading it. Are you having the same issue or is it working on your devices? I'm wondering if it just a bug in the new store layout.