Resetting password on router not supported by Nighthawk app

[Gsquare]

I have a AC 1600 Cable Modem Router, which is not supported by the Nighthawk app. When I try to log in to the routerlogin.net or .com sites, they will not load. I am trying ti figure out how I can get into my router admin site and change my router password and admin name

[antinode]

> [...] When I try to log in to the routerlogin.net or .com sites, they
> will not load [...]

   A clear description of what does happen would be more useful than a
vague description of what does not happen.  As usual, showing actual
actions (commands) with their actual results (error messages, LED
indicators, ...) can be more helpful than vague descriptions or
interpretations.

> [...] I am trying ti figure out how [...]

   You might find some relevant information in a widely neglected
resource:

      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
"Access NETGEAR genie".  Note the suggested alternative of specifying an
IP address.