iCloud says my Apple ID password is incorrect when it’s not
I received a notification on my iPhone that someone in China was trying to use my Apple ID. I changed the password. Next time I tried to use my MacPro I got a message telling me to enter my “password to continue using iCloud on this Mac.”
- I enter the new password and it says “This action could not be completed. Try again.”
- If I try 3 times it tells me to reset my password
- This pop up message won’t go away when I press Cancel. Just won’t go away period.
- I tried to do an update and to turn it off and it tells me to quit “System Preferences”. I quit it and nothing happens.
- I can’t even turn off my computer now.
- I’m unable to do anything.
What to do???