Nighthawk 2.4 isn’t showing up but looks to be working on nighthawk. Any ideas how to fix it?

Is there a NG router model# that your referring too? 

 

Has a power off for 1 minute then back ON with the ISP modem and router been performed since last update?
Be sure to restart your network in this sequence:
Turn off and unplug modem.
Turn off router and computers.
Plug in and turn on modem. Wait 2 minutes for it to connect.
Turn on the router and wait 2 minutes for it to connect.
Turn on computers and rest of network.

 

Has a factory reset and setup from scratch been performed since last FW update?

What router do you have? 

You say its not working but looks to be working on the nighthawk? Do you mean its showing enabled on the online browser?
What firmware version are you on? 

Does it have smart connect? (smart connect combines the 2x ssids if you have a dual/triple band device)