What firmware version are you using? I tried amt_a1_0820v01.img that AMT posted but it was giving me errors about using the --rock-freq flag in cgminer.
Which miner do you have? I get the impression they are a bit different. I got a rackmount one with 5 cards. Yours SHOULD be the same minus the rack mount case.
I got a desktop one which looks almost the same as yours, except for the casing of course, and the Pi. So are you using the amt_a1_0820v01.img image?
EDIT: Looking at your UI screenshots you're almost certainly not using amt_a1_0820v01.img The one you posted looks like the one my unit came with, except yours shows the temp and mine doesn't.
The UI on the amt_a1_0820v01 image is a slightly nicer:
http://i.imgur.com/vIZB3Gi.png