Apple Watch 5 won’t activate

Have spent the last 2 days trying to activate my new Apple Watch 5 to my existing Xfinity mobile account.  After several hours on hold with customer service, they offered no help except to tell me to go to the store for resolution. Spent an hour at the store today and after several attempts by the rep to connect, they called their internal team and we're told it was a known problem that watches are not activating and no timeframe for resolution given.   Anyone else experiencing this issue?  How do I get my watch activated?