I have completed the entire quest line “deeds of a champion”. When I go to the mission overview overlay (hotkey: J) it shows:
"Gain 10/10 Grim Favor in Nahantu [this part is marked as green and ticked]
- Claim a reward from the Tree of Whispers"
My issue is that I cannot interact with the tree of whispers whatsoever. I tried switching to different difficulties to see if that solves the problem. I did not. Any help Blizzard can offer here?