Today my Archer C2 arrived, so I set it up. Everything is working fine, except the web interface login. When I type the login credentials "admin" for both username and password on http://tplinkwifi.net, the "Log In" button turns grey for a couple of seconds, then back to green, with nothing else happening. What's interesting is that on the Tether app, the login credentials work. I tried resetting, but still did not work, only in the app. Also tried changing the credentials in the app, but still can't login. I have the last firmware, so no need to update. If anyone knows how to fix this, I would appreciate it. Thanks in advance.