So I have the same issue.... and just researched this topic now. I have an IP address for the EISY on my network but IoX gives the same error message that NOT FOUND. I did switch home routers from a Google Home mesh network to an Orbi 770 network....if that has anything to do with it. I enter the ip address I see for the EISY into IoX but it doesn't find the controller.... HELP! My entire system is down because of this damn thing. Thank you!!