I used my $50 on my GNex on various crap at CVS including a gift card, and once at MC'D's. My wifes just got her $50 and she went and tried using it at two different CVS's. First time they asked for the last four digits of the Mastercard, which you don't have. I called google while there and she said that store has new software and I can't make a purchase their. Next CVS where I used mine previously at my wife tried a gift card for $25 and it said that message again. Called google money network and they said certain CVS stores don't work at all, and some won't let you buy certain merchandise including giftcards. But being they don't tell you this you have no way of knowing other than to try again and again. That is all the money network said to do was just keep trying places. What a waste and that does it for me, I'm done with google wallet when I can unload this money somehow.