I may have an answer to the problem. Not a solution yet, but what may be the issue. My network is 192.168.1.x. The TP-Link Smart Plug mini has a network address of 192.168.0.100. During the set-up...

Smart Wi-Fi Plug Mini is indeed a problem. I have been unable to connect like you. The only difference for me is that I cannot see it on my router (also a Linksys EA9500). I have disabled 5gHz WiFi...