It doesn't have to be a mistake. Eirik is actually avoiding further encounters with Astrid. For now. In order to progress here, you need to keep playing.
It was expected that the player would continue the game, go on a date with Ulfa and when he went to bed, a scene would start that would unlock a new quest from Marigold.
It's not entirely clear what your problem is related to. Are you not using the bed? Or haven't you met Ulfa?
Yeah, it's probably a bug. We've released a hotfix. Just download the latest version and your saves will work. Go to Eirik’s house and go to sleep. You will be woken up by smoke from Marigold’s dugout and this will start the quest.
