pls help stratholme gate bugged?

[lightningx]

Hi I am trying to do my horde paladin epic mount quest but the gate is bugged. I can't go through the backside coz dont have the key, but can't get the key because this gate is locked.

https://i.imgur.com/yD8Mwas.jpg

as you can see I need to kill this guy on the other side of the gate to get the key to the undead part.

is this bugged or something? I've spend like an hour looking on google but can't find answers. Wasted like 600 gold on this quest chain already =/

[Nobuemon]

The gate opens up after you clear the entire crusade part (including the entrance bosses)