AX12 not broadcasting 5GHz network

Reformatting my original post for readability. 

I have had a new Nighthawk AX12 RAX120 router for about 2 months without any issues until today. The 5GHz band is not broadcasting despite the Netgear App and web interface indicating the 5GHz networks is good.

For what it's worth, this issue was discovered after our power went out.

Device Info:

• Nighthawk AX12 RAX120
• Firmware: V1.0.1.122

I have tried the following with no luck:

• Reboot the device - Both from the web interface and hard power button
• Toggled the Smart Connect ON and OFF
• Factory reset - Held the reset button for ~10 seconds and reconfigured
• Changed the 5GHz Channel to lower numbers, 36-48 and tried a few of the mid DFS channels

Checked:

• Enable SSID Broadcast is ON for the 5GHz network
• Checked on several devices, mobile, tablet, desktop, laptop. None display the 5GHz network
• The Nighthawk web interface and App only show devices connected to the 2.GHz network
• On the latest firmware, 1.0.1.122
• 2.4GHz network is working fine