i am trying to get the Bound Shadehound mount from the Maw.
Have searched for hours on how to get Crumbling stele from the puzzle with the stygia dowser action button that is supposed to show up once you enter the platform.
no matter what assault is active when i enter Perdition Hold Kleia shows up with the Sword companion action button.
As far as i can tell this means that the Dowser button i am supposed to click is somehow behind this sword button. making it impossible for me to continue my journey for the mount 
i have completed all campagnes, quests, maxed out rep, and tried diff covenants/companions…
would love it if someone out there has info that could help.
best regards from a frustrated player 