Cannot sign in with Apple ID to iMessage
I attempted to set up iMessage on my MacBook Air with my Apple ID and password, but got an error saying "Could not sign in to iMessage. An error occurred during activation. Try again".
I can sign in to apple.com with my Apple ID and password. I have also restarted my computer. Still no luck. Does anyone know what could be wrong? What else can I try? Thanks.
MacBook Air 13″, macOS 10.15