Apple Watch won’t connect to cellular Tmobile

My Apple Watch Series 5 was working fine, my service was suspended for an hour and when reconnected my Apple Watch was not paired with cellular. When I called Tmobile to have them re pair it she somehow completely removed the connection and now watch says no sim no connection. On T-Mobile’s side everything looks fine but I have spent 4 hours on the phone and at the store and nobody can get the watch to connect