Currently got a Support Ticket open now for a Game Master to look into my account. Killed the boss several times today and still not a single piece of loot from the Hearthstone Event in-game.
Not even getting the option to loot the corpse after we kill it every time too. I think my character itself is bugged from receiving loot.
Average wait time is 2+ weeks though which sucks cause event will be long gone by then.