Trouble connecting to 2.4 GHz network with XB8 gateway

I recently purchased a Tractive dog collar that requires a 2.4 GHz network. When attempting to find a network with this device it does not pick up up my home network. I've tried contacting Xfinity but their support is less than helpful. I have tried to disable the 5 GHz band within the admin tool in the browser but this does not help either. Does anyone know how to resolve this issue?