I love this app and I use it everyday (the one for the forum). Right now and for the past four days or so it hasn't been working for me either. Like others, I have tried deleting it and then loading it again. It just won't load any of the posts I click on. Right now I'm using the store app and just going to the forum directly, which is not as convenient as the forum app.
I could use the tap talk but not as much fun to use. It fact , using both the AG apps at the same time is really nice when I'm in shopping mode.
Hello AG, where are you?
As a side note, when going to the App Store to reload the app, I noticed a new app for detail businesses from AG also. Thought it would be handy and found trouble with it too but in a different way, some iCloud Registration prob..grr