Yes i tried approaching Rodney from different directions.
I re-read the sign post few times.
And yes i can talk to Louis and other guards in the same room where Rodney is.
That's why it's quite weird, only this 1 npc is bugged.
At least i hope the items required for this quest will disapear after i cant enter Broken Valley anymore, couse i cant destroy them

Edit.
The items didnt disapear ... good thing u get storage in battletower, i dont need to cary herbs/ores etc so the few space slots they take aint a big deal
