Itunes Desktop and account update
I am trying to down load an app on my iphone5s and I am getting this message "you need to update your account with iTunes desktop" "Aol accounts are no longer supported and need updating via iTunes desktop." I went to iTunes on my desktop. logged into my account and everything looks fine. I logged into Apple.com and my id and password is all fine. What am I missing here?
iPhone 5s, iOS 8.1.3