See if the shop stock is showing in the ABer. If not and there should be, restart your computer. Also don't login your Neopets account(s) that are being used by any programs.
im only using the Aber right now. so far... in 200 refreshes i havent gotten any of the items on my list. but the ABer works, because i sued a normal stamp to test it. The list is loaded on too, so idk