We have notified the game studio of a possible issue with Fantastic Five.
One thing to notice: If your Fantastic Five is greyed out, it still should work if you play on and collect points. So I encourage you to keep on playing and checking if your leaderboard comes up updated then.
I've noticed that after the time was up on the fantastic five, it has been stuck. No fresh competition for some days but I get points when I log in. Why?