Connect your ipod to the computer that you want to be the primary computer. Open iTunes and synchronize. If you can't unlock your ipod and you don't have access to the primary computer, your only option is to restore the Ipod, which will erase all music and data. Please take time to rate me Bud. The issue starts when your iPhone or iPad device is disabled. It asks to connect to iTunes on your Mac Pc. Once you plugging to your phones, your Mac computer asks you to allow to sync from your phone. But When you click to continue it shows you the message that you have to respond to your phone.