Sorry, we are service provider we can not update or override the phone manufacturer software and settings.
Figured out a new fix. Turned off Enable LTE in Cellular settings. Texting now appears to work.
We truly apologize for this inconvenience, @TomH. You can rest assured knowing that we will do everything in our power to resolve this. To research further, can you send us the cross streets and ZIP code where this occurs? Are you getting any error message?