Thanks for the support! Erland is a bug and will be fixed in the next patch. Jostein 16 isn't a bug, it's just hard :)
I replayed the Jostein quests, and this time Jostein 16 triggered. But I still dont know why. Does it relate to the bountiful harvest? Cuz I cant tell any difference than the first time except bountiful harvest.
BTW, the gut, social and passionate choices will impact chapter 1 ending, it means that there are more than 1 ending of the chapter 1?