Not offered Candy crush Quest anymore.

Solution 1:

Go to setting. Turn airplane mode ON. Then the "play quests" option will automatically appear! Took me a solid hour to figure it out!

Solution 2:

Sounds like you might have to completely go offline (no 3G or wifi), not just from Facebook. Read the last entry of the first post here and see if that works.

The part of the post of interest:

What happened to my Mystery Quests?

You will now be able to ask your Kingdom co-players for tickets to progress in the game but if you are offline (not connected to 3G/wi-fi) then the Mystery Quests will still be available. I hope that you all enjoy this amazing new feature and if you have any further questions, please let me know.