I looked further into that issue and it appears I made a mistake by changing the event. Because of that, the quest wouldn't count as completed. However, this should've been fixed as soon as the new version goes live. (In order for this issue to be resolved on your part, the only thing you need to do is enter the tavern again. Then the bug fix should trigger.) I apologize for that.
As for the mentioned areas, they will be unlocked at certain parts of the story.
And wait, is that so? I honestly didn't know that what I did with the signs is such a big thing. xD Good to know, though. I'll do that in the other game I'm working on as well, then. :D
The updated version will go live later this night! :)