Interestingly enough i just had this exact same problem. I upgraded the firmware on my wireless access point and all of a sudden my EvoHome controller isn't connected anymore and can't even see my broadcast SSID. Eventually after looking at the AP, I see it has now autoselected channel 13 to run on on the 2.4Ghz band. I change it from auto to manual and pick channel 1 and the EvoHome controller rescans and finds the network first time. Hmmmm.