I have a new xifinity advanced cable modem. The one you have to get if you get thier 1GB speed plan. Neither my new Ring camera or old Belkin Wemo light switches would connect to this modems 2.4G signal. I called the xfinity tech support and they couldnt help me.
To make a long story short. I connected my old Netgear N6200 Wifi Router to the xfinity modem. Once I did that I was able to connect my Ring camera and the belkin wemo light switches to the Netgear 2.4G signal without any problem! Now I have full access and control to both devices either at home or on the road.
The longer version: I ended up disabling the xfinity modems 2.4G signal and then disabled the netgears 5G signal. That way they wouldnt overlap and cause problems. Then I setup the netgears 2.4G signal to transmit on a 2.4G channel that didnt have any other traffic on it. As a side note I did the same for my Xfinity modem 5G signal too. Only reason I why I did this, is I am a certified Wi-Fi engineer for a major aerospace firm. Its amazing how many times litterally, “changing the channel” a customers wifi antennas are broadcasting on, to avoid overlap with other Wi-Fi antennas, resolves thier “slow” wifi issues.