Vault issue with appearance on main page

Not a bug, per se, but definitely a complaint. After seeing an advertisement on the front page for an increased chance of mythics, I purchased the Blue Super Pack available in the Vault for $29.99 with 10,000 Runes and 600 Crystals. 

I then heard that this was supposed to be for an event starting on Saturday. I purchased 2 "Premium Packs" of Kaladesh, and received nothing but dupes.