I have tried to get past this quest several times. It won’t show the finish button. It only shows accept/refuse and won’t let me refuse it. I show that I completed the quest then I go back and the buttons don’t work. then I sold the item, abandoned the quest and went back and got the same quest again. finished the task and it won’t let me press the finish button.
I don’t know if anyone else has mentioned this but there are items in my inventory that I try to sell the game says, “item does not exist” and it’s still there! I will then close the inventory and reopen it and the items that ’don’t exist’ are still there.