Pinnacle of Flame quest bugged – stuck at 8/10 Map Boss Atlas points

I am stuck at 8/10 Map Boss Atlas passive points and cannot obtain the final 2 points from the Pinnacle of Flame quest.

I have defeated Arbiter of Ash, but the quest does not complete and no Vanquisher’s Book of Knowledge V is awarded.

When I click the Pinnacle of Flame quest after killing Arbiter, the quest animation plays, but nothing happens afterward (no completion, no reward).

Character Info
Character name: kekxgodx
Platform: PC
League: Fate of the Vaal (Standard)

What I’ve confirmed
Burning Monolith fully revealed
All 3 Crisis Fragments used correctly
Arbiter killed multiple times, including solo
Talked to Doryani in:
Ziggurat Encampment (town)
Hideout

Inventory not full, item filter disabled
Atlas Map Boss tree remains 8/10
Quest does not progress and no book is awarded.

Maybe this guide from Mobalytics can help:

https://mobalytics.gg/poe-2/guides/map-boss-atlas-skill-points

Make sure you did all of these, and check area level once in the map and not from device.

Acquiring Map Boss Atlas Passive points has been adjusted. These are now obtained by:
Slaying a Map Boss in an area level 79+ Map that has at least 6 Modifiers.
Slaying a Map Boss in an area level 80+ Map that has at least 6 Modifiers.
Slaying a Anomaly Map Boss in an area level 79+ Map that has at least 6 Modifiers.
Slaying a Citadel Map Boss in an area level 79+ Map that has at least 6 Modifiers.
Completing the Pinnacle of Flame Quest.

To make sure you will do it right just play 1 portal map.