Seems that I get one problem sorted and then another pops up. For two days now I have been at times unable to play the daily challenges because once I am signed in and before I see the ad for the day all I get is a white screen. Staying on this screen gains me nothing and there is no way to access it apart from closing the page. I can try several times to no avail but then with no reason whatsoever I can play the games. Frustrating or what!!!