I have tried to sign out of my devices and sign back in and this does not work. In system preferences I keep getting asked to Update Apple ID Settings.....which then underneath it says some account services with not be available until you sign in again. Anyone else having this issue? I have this on my MacBook Pro as well as my iMac ...I did not have this issue before I upgraded and all my devices are syncing and working fine...Ideas anyone on what to do would be appreciated? Thank you!