Cannot get the XBOX music app to play any music in the cloud. It shows my music in the cloud, but when I try to play any music, the app gives the following error message: "Can't sign in. Please try again later." (see attached screen shot). I have updated the app, hard reset my phone, have an Xbox music pass, tried using the old music + video hub per tip, download music to my phone (music from my computer works fine, but doesn't fix error), downloaded the diagnostics app, and stood on my head while singing 'does your chewing gum loose its flavor'. I'm out of ideas. It seems no one else has this problem, because I have searched for an answer all over and nothing.