The web administration page keeps refreshing after about 10-15 seconds. I usually login to my local IP address. Before long, the page reloads to tplinkwifi.net and forces me to login again. I tried using the tool under the latter domain, but it still refreshes the page automatically. Each time it does so, it asks for the login password.

I have had this router for quite some time, and it's never done this before. Same laptop as well. I tried clearing my browser cache, which did not help.

Any ideas?