Leave the app open and after a time you should see a whirring circle near the lines at the outer left corner which show the strength of your wi-fi signal. The app automatically updates itself and after a while the new issue will appear on the screen. Then you can download it.
If the app doesn't refresh itself, then quit the app, turn off your iPad. Turn it back on and tap the app again. The new issue should show up.
Restarting (rebooting) is something that PC folks seem to know, and something that Mac folks seem to ignore. Most Mac folks just put their devices to sleep and that's not good. Restarting your device regularly helps it clean itself up.
If an app has an issue, resetting an iOS device can sometimes fix it. The part that was codswallop, which is why I quoted that specific part, is that restarting osx or iOS devices regularly helps it clean itself up.
Yes, the paper issue has not arrived yet. I just sent an email asking how long I should wait before purchasing a replacement in case it never comes. Perhaps a postal employee saw the free dvd and... no, that would never happen.