My WiFi separate bands not working

Hi, I’m having an issue with my Xfinity gateway. My 2.4 GHz Wi-Fi network is enabled and separated from my 5 GHz network, but the 2.4 GHz network is not showing up on any device.

I’ve already restarted the gateway and changed the network settings. I need technical support to check whether the 2.4 GHz radio is working and broadcasting correctly.

Can you remotely troubleshoot or reprovision my gateway?