Dave,
Thanks, you have been great. As has everyone really who has provided solutions and ways to think about how to fix.
It has taken me all day today but, as of about an hour ago, my watch is finally working and active on cellular. It took more phone calls - 4 different AT&T stores until I got a competent person to assign a 'phone number' to my watch to attach the e-sim to.
Then another call into customer support where a beleaguered associate helped me all the way though. She hit a roadblock..surprise...and told me I would get a call back on her shift tomorrow when tech support was not so backlogged. I asked her if there was another faster way because it had been all day today.
Right before the close of the call center at 8pm cst..she called me back and tech services had activated my watch. She placed a call to the faux number and got vm, which she said was a good sign. I had to go to the cellular part of the watch app and re-log in and number synch happened, I got a text and everything worked.
She thanked me profusely for not yelling at her and being mad at her through the process because she had been on the receiving end of some understandably frustrated people who mistakenly blamed the people on the phone. Yes, very likely AT&T's issue but the people on the phone didn't cause it. She was helpful and stayed with me until there was success.
AT&T was a mess on this issue...she said so herself.
I wish you all the best - be persistent, that's all I can say. That's how come I am working tonight instead of waiting for a call back tomorrow. It's not your watch..no matter what anyone says.
This has been a great thread with a lot of helpful people.
My situation may or may not be unique, but I will help how I can.