now i know this is historically a buggy quest, but currently right now its beyond the usual issues. Even whilst the room is clear/no event currently happening / in progress, the quest eitehr instant fails on accept, or the npc moves about 15 yds, stops then despawns after 10 min or so and quest fails
Theres many trying to get this done and having the same issue. It feels like something else is broke with what ever you changed.
bumping my own post i know
but digging around on the US tech support/bug report section
it appears this is on all servers, its flat out broken, for everyone
Wakey wakey Devs
still broke
saw it actually work a couple of times today then about 5 rdifferent raids worth of tries all insta bugged