I'm guessing : you took it to the papershop/stationery shop in San Francisco??
Normally after you get a code it takes a while to pass the information to them, it's not real time computing - I was told come back tomorrow and sure enough no problem with the code I had.
Print out what you have if you can, the shop will only have the code you got, when it receives it, asking for another code is another days wait.