how to change 5g home internet location

I think I found the solution to the modem router saying wrong city, cancel service and go with regular internet providers this is why I'm getting the service for $30 per month you don't get deals today you get what you pay for, meaning they most likely knew this before they offered it. The service itself is fast and good over 500 mbps but my local news channels are in wrong state,  you can find this out by two different ways perform a speed test using ookla.net it will tell you what servers it's on,  or go to youtube on a tv and find news then local news. Mine did work for a year now its wrong with no solution.  It took me a while to figure out this was their problem,  other than wrong city or state which you can work around I guess the service is cheap and good. Another note is I'm not able to change admin password or name in my modem g4ar no where in the settings has that so I'm not sure why. I wanted to change it incase of possible hacking,  their customer service is not very good especially if you call after hours