The first is leaning curve, I enjoy these missions but the scribe at the meeting point has vanished. The quest icon leads me to where he was standing, but he's just not there... Maybe he fell through the earth?
Anyway, fast travel, waiting a week, talking to the quest giver to see if he died, all dead ends. The quest is active and cannot be abandoned or restarted, and going back 20 hours worth of saves doesn't fix it (I keep 10 at any given time).
The other quest feeding the troops is the one where you ask the farms to surrender crops. It's ALWAYS nordhaven beach (spelling may be incorrect), the area north east of the airship. 10 completed times at least, with multiple reload attempts, he always sends me to the exact same farm. I could do it more, but it's immersion breaking as hell.