My iPad has been working fine. Setup went well. I've had to us my Apple User Name an Password a few times. Downloaded a couple of apps (ebay & Amazon) - no problem, and no sign-in required. Tonight I thought that I would sync some music to my Pad from my computer via iTunes. Surprisingly, I did not see an iTunes app already installed, so I installed the app: iTC Mobile. Upon opening this app, I'm met with a sign in requirement -- Account Name & Password. I tried my Apple User Name & Password --- will not work ----> authentication error. Tried looking a some Apple help, thought I would have to set up an account with iCloud --- I did this (I'm always using the same name & PW). I still can't get past the iTC Mobile. All I want to do is sync music to my pad and play it. Help, please. Thanks.