Messages app says "Not Delivered" for SMS messages
All of a sudden my iMac and MBP, when using Messages app, says "Not Delivered" every time I try to send an SMS text. This was working before.
- I rebooted all devices.
- I signed out of iCloud and back in.
- I made sure SMS was enabled in iPhone.
What do you suggest? This is driving me NUTS!
Running the latest of everything.