My advise is that don't use tp-link的ddns service. Go to basic--tp-link cloud, and untie it. Then you can use admin to login.

I noticed that your mode is 802.11ac only, mine is 802.11a/n/ac, I set my channel to 149. Which country you are in?

Model : Hardware Version : Firmware Version : ISP : The simplest way is not to use tp-link registered id and password and go back to using admin to log in. How? If you are like my case, once turn off...

http://www.tp-link.com/us/faq-73.html#1 Hope it helps.

Can you tell us how you did to to be able to connect to your router? I registered tp-link id and cannot login. If I turn off the power of the router, I can log in for about 1 day.

Have you already registered a tp-link account? Once you registered, you cannot use admin to log in. Use the email address you registered tp-link as the id.