iMessage not working on Tahoe 26.6.2
I'm running the latest Tahoe (26.6.2) on my iMac and my laptop. After the upgrade, as near as I can figure, I stopped getting texts on both, and also on my iPad. My iPhone, on which I recently did a Reset, seems to be working fine. If I send a message on my phone, it doesn't appear on any of my other devices. Messages sent from the iMac, Laptop or iPad don't go out. Any clues?
iPhone 12, iOS 26