Messages will not "send" in MacOS to non-iPhone
For the last couple weeks I am unable to send messages in MacOS Messages to non-iPhones. Messages to iPhones send without a problem. I am able to send messages to non-iPhones on iOS devices without any problem. I have rebooted several times and checked settings. I am logged into iCloud. Any suggestions?
MacBook Pro 15″, macOS 12.0