Question: Not able to send message using iMessage on MacBook Pro 10.13.1
I have been trying to send messages using iMessage on MacBook Pro with 10.13.1(High Sierra). It was working till I upgraded from 10.12 (Sierra) and my iPhone to iOS 11. All messages are synched instantly but I can't send a message from MacBook.
I tried enabling/re-enabling Two-Factor Authentications.
Factory Resetting iPhone and MacBook Pro
Tried using other Apple ID (Only in Messages App not in iCloud Settings) on my MacBook and it worked.
Tried my Apple ID (Only in Messages App not in iCloud Settings) on other MacBook with 10.13.1 (High Sierra) and I was able to send/receive messages on other MacBook.
It seems that I can't use my MacBook to send messages. This is very frustrating for me as I have to use both iPhone and MacBook.
Please look into this.
MacBook Pro with Retina display, macOS High Sierra (10.13.1)