I have a bug during the starlit melody quest where the guard eyes during the Facility X-301 portion of the Starlight Isle quest chain would not complete after hundreds of kills, so I dropped the quest in an attempt to restart it. When I attempted to follow the quest chain back to all the previous npcs it didn’t appear. When I click on starlight island in the map I am given a bug message - unable to verify instance island info. So the quest chain is completely unavailable.
I have the same problem
I also have this issue no idea where to start the quest again.
Same problem here too.