I bought two 100 credit gift cards from the user shops, I went to use them and the first went through, but when I went back to my inventory to use the second, clicked on the item(which still brought me to the page to do things with it, so at that point I know it was still in my inventory because it didn't give me an error). I clicked to redeem the card, and it brought me to a page saying I did not have that item. Sp is gone, as well as the item, but it did not give me the CSC. This was during the lagspikes around 10 minutes ago in case that has something to do with it.

EDIT: I have received the missing CSC. Perhaps it was delayed somehow?