Same issue. Losing access to tplinkwifi.net as well on wired connection. Only fix is to restart the router. Router seems more stable when only 2.4GHz enabled. As this point, I am wondering whether to...

Having the same issue. Just bought this. Going to end up returning it as its dropping multiple times a day. Can not even access tplinkwifi.net from a wired connection. Are these models not testeted??