wow did that manage to tick me off!
managed to get 5 of the 7,000 in my shopping basket, entered all my details, and it claimed my expiration date was wrong. i triple checked it visually, and re-entered just in case. still said it was bad did this twice, then chucked me out, and then of course everything was gone.
totally frustrating as all the data was correct and so there wasn't anything i could do.