How to use iMessage Fixer?
With only few clicks it will reset your iMessage settings.
Once you run the iMessage Fixer you will be prompted with the following window which simply says what’s about to be done.
By clicking yes you will be prompted to enter the password of your user account on your macOS and once the files are removed you will be prompted to restart you computer. Make sure your user account has administrative privileges because if not the app will fail to remove the files that are causing the issue.
Once your Mac is restarted open iMessage and login with your AppleID and password and your account will be activated.
iMessage settings on iPhone:
Just make sure that iMessage Text Message Forwarding is also enabled on your iPhone’s iMessage settings.
By activating this feature on your iPhone you will be able to recieve and send text messages from your Mac as well as your iPhone.