I can’t use horn of the vastiri

Account name 3032363442#8614
I encountered a plot bug that I couldn't solve
I can’t use horn of the vastiri
When the game dc'd now am stuck with the horn and cant click the objective area to blow the horn.
I have tried restarting
I have tried teleporting to a different location
I have tried using the desert map and traveling around the map and back again.
And still cant progress.
Am stuck with 1 quest, The trail of Corruption.
I take the caravan to The Halani Gates, and there should be the quest thing to click to blow the horn, but its gone.

You need to . Are you sure you went there ?

same happened

same happened，how to solve？

happened to me too. Game crashed while blowing the horn and now I cant progress anymore.