RAX48 Nighthawk AX6 AX5200 - red power light and red internet light

What verizon modem is it? 

Some have their own integrated routers that cause a double nat. 

A double nat happens when you cascade more than 1 router.
https://kb.netgear.com/30186/What-is-Double-NAT
Fixes? There’s 3 options but only use 1.
1. Put the modem/gateway in modem only/pass through mode. This disables its routing functions.
2. Leave the modem/gateway in router mode but put the Netgears IP address into its DMZ. This forwards the data to the netgear. You can either leave the modem/gateway’s wireless enabled or disabled. Just make sure its using a different wifi channel to prevent interference
3. Put the Netgear into access point mode. This disables its routing functions. Wifi/ethernet still works but it does disable some features.
https://kb.netgear.com/26765/Which-features-are-disabled-on-my-NETGEAR-router-when-it-is-set-to-AP-Mode

See if you can access it via an ethernet connection.

Also, the RAX48 has a wifi on/off button. That could have gotten hit by the toddler. A factory reset doesn't clear that out because its a hardware setting. Push and hold it for 2 seconds.