Board Thread:Tapped Out Help/@comment-99.34.126.25-20140614032555/@comment-25021853-20140614085448

I'd check the quest maphttp://simpsonstappedout.wikia.com/wiki/Category:Quests for those tasks to see what characters trigger them or if you need to complete a prior quest chain first.

I know I leveled up super fast (I hit level 40 about a month after I started playing!!!) and my quests lagged my level big time. Also, if the character who triggers a quest is tied up doing jobs in Krustyland, they won't trigger the quest till you free them up and then go back to Springfield (and maybe even leave and restart the game) before they will start the dialogue or monologue that starts the quest chain. Hope that helps.