Can you check...
- Do you have the location "Christmas Cottage of Gifts?" That's the next location that opened after the Tuesday update. On WebGL, you have to scroll past Challenge Mines 1, 2, 3, 4, and 5 to see it.
- See if Challenges 6 and 7 are open as well. If you haven't already done so, be sure to visit them.
I'm wondering if you have to visit Challenges 6 and 7 to get the Cottage of Gifts to appear, but I don't remember it happening that way. What was odd was that I saw Challenges 6 and 7, visited them, and got the quest reward, but I never saw any quest open that told me to visit them.
Let us know what you learn, as other players are in the same situation.