@s_mooky in my case Hytham gave me the reward before I did the quest. Now the father is out there and I can't kill him because the quest won't start.
@evilspark1 man I have given this game 170 hours, and now that I am at the end I am in this situation as well. I have been in contact with support and they just said to keep an eye on the board. that the developers are "aware" of the issue. -__-