Need more info. This a new install or having issues with r7800 that has been installed and running?
Please provide firmware version, number, not something like latest.
ISP Comcast, Modem-Netgear CM1150V, Router-Unifi Security Gateway-Pro4, AP-2 Unifi AP-LR
Tesla > Edison
Go with a wired PC to http://192.168.1.1 and login with "admin" and "password". Then configure the router
Switching: 2x NETGEAR 8-ports (GS108v4) / 1x NETGEAR 16-ports (JGS516v2)
Storage: Custom-built Linux system