Be aware that the reusable soul gem from the Aura Thief (you get 4 times an empty one back, after using), doesn't work if you've used V2.0 already.
To fix this I recommend to start a new game or simply keep the soul gem from the Aura Thief as a one-time useable soul gem for your current playthrough.

Ok.
No worries, I actually had issues with installing mods from the Workshop here myself.
I thought if you download them they work right away. XD
Learning never stops. ^^

I figured out what I did wrong dummy me I did not active the mod it works fine.

No. I haven't played this game for a while, so I don't know about any updates.
Maybe the devs added new invisible walls to that dungeon (even though that wouldn't make much sense. ^^)

Yet it should work normally as shown in my video.

I subscribed to this mod and installed it before I even got to Ark. I found his tower and went inside killed all the elemental and I can not get near any of the ore you show in the video. Do I have to install it some other way?