Sinister Tonics

I'm having problems getting the Quest Involving Sinister Tonic (Zinn's Quest) from Salma and the other NPC's.
They will not give me any quest and i have all 3 Campaigns + Eye of the North just like it says is needed for the quest. It sounds pretty simple and should work right? But i must have missed something.

Any ideas on what that is?

did you get mox? once you have mox you need to go back to town and be just you and mox. open the golem book and hit enter mission. you get the quests there in this solo mission

Aaah ofcourse, I missed that part. Thanks for the help!
All i needed to know!