Nighthawk mesh Wifi 6 router MR60- Different network and password

> [...] unable to find the network that was named on the sticker on the
> device. [...]

   Do you mean the wireless-network SSID(s), or something else?

> [...] after much time of trial and error I have determined that it has
> a different name and password than is listed on the 2 stickers on the
> device. [...]

   it shouldn't take very long to switch the power on and off, and see
what appears and disappears in the list of available SSIDs on some
wireless device.

> [...] Is there a way to access this router and change the name and
> password?

   Have you tried the obvious?:

      https://en.wikipedia.org/wiki/RTFM

   Visit http://netgear.com/support , put in your model number, and look
for Documentation.  Get the User Manual (at least).  Read.  Look for
"Types of logins".  Further reading might not hurt, either.