Having the exact same "no device" issue. I've only had this thing for a couple of weeks, and since I (fortunately it seems) bought it as a sound source for my POD HD500, I hadn't taken much time to play with the Amplifi sounds. Now that I have, I'd say the default patches (since I can't access anything else) and the iOS app (since it won't transfer patch settings to the Amplifi) can only be described as garbage.
There are other full range solutions I could have used for my POD HD. I gave the Amplifi the nod due to it's stand alone capabilities. Capabilities that don't appear to exist.