iPAD App Issues

I recently started using an iPad and downloaded the Learn App. While it is really nice to be able to watch the videos on the iPad, I have found a few issues. Once I select a session to watch, after the video is finished, I cannot get back to the learn server. There is an icon that is supposed to take you back, but it places me on a blank screen with three icon at the bottom. The left icon is supposed to be the learn server icon, but it seems to do nothing. The other two work, but once I select one of them, I can't seem to navigate back to the learn server. Currently, I have to exit and relaunch the app after watching each video. I am better off using Safari and the web based interface, but it seems like I have to log in more often in the web based interface.

The app seems to need more navigation buttons so one can bail to the topmost screen if needed.

I'm sorry if this seems a little cryptic, but I am still learning to use my iPad and decided to post once I got to the office, while the iPad is at home.

When I try to get back to the Learn Server via the blue icon at the bottom of the screen, or use the back or home button, there is a momentary flash of some screen and then I get a blank page with no interface items. The other two icons will take me to their pages, but once that blank screen appears, there seems to be no way to return to the learn server without exiting and restarting the application.