An error occurred during activation in Facetime, iMessage for Mac
"An error occurred during activation. Try again later"- this is the message I am getting whenever I try to sign in to Facetime and iMessage in my MacBook. I have verified my iCloud account, and sure it is active. I am a newbie in Mac OS, so I am struggling with this new hardware. I have always been a windows user, and this is my first attempt to use Apple Hardware, and so far, it is coming to be a BIG Adventure.
MacBook Pro, macOS Sierra (10.12.6)