I changed my iCloud account (email sign-in) about a month ago; I updated to iOS 7 last night and tried to use AirDrop on my iPod Touch 5th Gen, but it kept asking for my iCloud password with my old email address. I've looked in the settings and most settings (iTunes, App Store etc) are using my new email address; in the iCloud settings it's prompting me for my password for the old email, and won't allow me to select the email in order to change it. It says 'Delete Account' at the bottom but I'm reluctant to do that, in case of, you know, sod's law. Any thoughts? Cheers!