Guild Wars 2

Hello,
i am trying to finish my precursor hunt for “The Predator” and am currently in Vol. 3. There i have to “Assassinate Champion Frainn” to get that achievement. Its the group event at the end of an event chain in Timberline Falls, close to the might Oouo in the east.
There is only one overflow server in EU with Timberline Falls (ip ending: .78), so i cant guest or anything and on this one map, the event chain is bugged out.
In the cave close to the waypoint there is no grawl shaman anymore, so he should spawn a bit to the north as the first event of this event chain.
Its already a few days and its still bugged and i still cant find another server.
Please fix this event for good – i read people had similar or same problems with this event chain 2 years ago.
I cant progress my precursor and i bet other people are in the same boat as me. You need that event chain for another precursor hunt as well, but i forgot which one.