- Steal Lathander's mace without deactivating the weapon first
- The party will get trapped as the weapon activates to destroy the monastery
- Deactivate the weapon by putting the Dawnmaster's Crest inside the slot
Afterwards talk to Astarion and that's it, works perfectly fine on my end.
I really don't understand what's wrong with my game. I did what you wrote but, again, nothing. Could it be because I killed almost all the githyankyi?