Password change on Nighthawk AC2300 Smart WiFi Router (R7000P)

There are three passwords on Netgear routers:

1. The credentials required to use the WiFi network
2. The credentials required to access the router web interface
3. The credentials required to use the Nighthawk smartphone app

Might start by looking at the User Manual:

https://www.downloads.netgear.com/files/GDC/R7000P/R7000P_UM_EN.pdf

Might start socking away a little money here and there. That R7000P was a decent router. But that was over a decade ago. While it still works for most situations (and is pretty solid), its also getting a bit older, doesn't get updates anymore, and is several generations behind. 

But props for getting all you can from it!