New Apple Watch ERR0093 - solved

Fought with this for three hours yesterday. Was trying to activate AT&T cell service on my new Apple Watch 9 after successful pairing to an iPhone 13 Max. Skipping the unsuccessful steps along the way, I finally solved the problem by logging in to my AT&T account on my PC and provisioning a new “SmartWatch” using the IMEI number associated with the Apple Watch.

A few minutes later the watch showed cell service! Yay!

I still need to call AT&T to resolve billing issues, but technologically everything now works.

The advertised method for provisioning cellular using just the phone and the watch three one ERR0093 after another. Very frustrating.