Green text messages now saying Not Delivered from Computer
Working from MacBook Pro 2019 running Mac OS Ventura 13.1
Have had no trouble with sending messages until yesterday. Suddenly, green texts stopped sending. I get Not Delivered on any I try to send. I've closed and opened iMessage, I've rebooted the computer, I've searched to see if I can find any place where something might have been unchecked. I can send from my iPhone or iPad, but not the computer. Any ideas??
MacBook Pro 15″, macOS 10.13