Quest: The Root of All Evil

Hello,

I just got exalted with The Timbermaw Hold with the expectations that I could by a trinket that would turn me into a furbolg.
To my disappointment I realized that this item doesn't exist in TBC.
However I thought that I could do the quest "The Root of All Evil".
When I'm standing in/at the mouth of High Chief Winterfall's cave I try to summon the demon but nothing happens.
An error message that says "requires the mouth of High Chief Winterfall's cave" is the only thing that pops up.

So my question, is this quest working?

https://tbc-twinhead.twinstar.cz/?quest=8481