I finished the “Book of Heroes” in Hearthstone Adventure mode, my last battle was against Faelin and I think I should have received 2 boosters that I haven’t received. One for finishing the battle with Faelin and I think you give another for finishing “Book of Heroes”, I got the impression of having received one envelope or two (I don’t remember exactly if there were 2). Then I went to open them and they weren’t there.