Free Event Games will Not Activate

I can't use the "Activate Now" on any of the free challenges.  I tried on the following games, First Class Solitaire, Canasta, Tumble Bees, Aces Up, Jet Set Solitaire, Quinn's Aquarium, Sweet Tooth, Phlinx II, Majong Sanctuary, Snowbird Solitaire; just to name a few.