iCloud login "Could not communicate with server"

Hi,

Just received my refurbished MacBook Air 2020 today. Attempted to log into iCloud from the setup options at the beginning... received a verification code, entered it, and then received the error message "Could not communicate with server." So I skip all of this and go to desktop... I log into Apple Music, Messages, FaceTime just fine... but still cannot login to iCloud from system preferences. It keeps throwing me back the error message "Could not communicate with server."

I've tried changing password, logging in and out of all my devices. Restarting. Honestly feeling stumped! Any advice appreciated... thanks.