Do you have a save file in each game that you tried? It might sounded silly but you never know....I tried 3-4 games so far that I checked are inside the compatibility list.
Mario Kart 7
NSMB2
Super Mario 3DLand and
Zelda ALBW
all of them are the PAL versions as my Powersaves hardware has a UK customer service. (I am not from U.K though).