The pre-order bundle is not 90 packs, but 80. You have 82. Those are the 80 from the pre-order, plus 2 from the season chest. (You should have received 2 Ashes of Outlands packs, but due to a bug the packs you received were Scholomance. This bug affected everyone and it won’t be fixed. See Scholomance Academy and August Ranked Rewards)