I'm curious about how many times your tried. My visit 2 days ago, I tried $500, and failed. Tried it again, and lo and behold it loaded. Lately when my Kate is working, it takes an average of 2.5 swipes to load a OV. So maybe 3 failed swipes in a row, but maybe also a successful load on the first try. Yes, if you try 10 times with no success, I say either go to $49.99, or go home and try another day. But just one swipe doesn't tell you anything about whether Kate accepting OVs that day or not.