You can get 3 event cards, by the discovery queue. Not just 2.

I just thought I'd let you know that you can get 3 cards, just as at all previous sale events and as the FAQ explains, while the queue info suggests that you are done after 2 cards. So just do another run and ignore the message.

Edit: This isn't related to the earlier bug that granted a dozen cards and that got fixed. And you won't get any further cards, after the third. ;)

View attached image.