In this thread, TL-ER7206 Blank Login Page - Business Community someone explained his problem with the TL-ER7206 Blank Login Page. As the thread is closed, i´ll leave it here. 

Had the same Problem. Here ist the solution: 

1. Open a Terminal/Powershell and type: ipconfig /flushdns

2. Open a new private Browser Tab

3. Type in 192.168.0.1 and now the login page will shown normal as usual.

Hope that works for you.

CF