I only bought one. After it failed, I lost hope. I might try again today though.Were you able to add all the cards?
If you're copying/pasting the codes, make sure there are no spaces. The error just happened to me for one of the cards I bought. I was then able to get them to go through within minutes of purchasing after I eliminated a space.
I tried copy & paste. I tried typing. I tried having someone else type in case I was seeing/reading it wrong. It just doesn't work for me. I need to contact BB.