DTV Stream not showing correct local channels

We are DTV satellite customers that use the DTV app via a Firestick on a secondary TV.  Our sattelite receiver and iPad reflect the correct local channels (Sacramento), but the app on the Firestick has recently switched to Reno.  It was working fine on Sacramento for many months, nothing was changed and it switched to Reno local stations, then it switched back to Sacramento and now back to Reno.  We have changed nothing on our account zip code mailing address.

Any ideas on how to correct?