There seems to be a mix-up in the kingdom adventuring research line that unlocks quests/goodie huts
- researching exploration spawns level 2 quest locations and raises your questing level to 2(you can immediately do those quests)
- researching the follow-up, ancient lore, raises your notables level to 2, but the notable locations it spawns are level 3(you cant visit them)
- researching another step, ruin delving, finally spawns level 2 notable locations(amongst other things)
I believe the notable location levels got swapped between ancient lore and ruin delving. Ancient lore should spawn level 2 goodie huts, and ruin delving level 3 ones.