The app explains how to setup the router admin. You log into the router via your browser with your default username and password. When you have internet connection problems, you can setup and configure the router again after performing a "reset". Get the 192.168.1.1 tenda admin password information and then whenever you have connection problems, you can solve the problem by installing from scratch. The content of the application explains how the following subjects are done. Router configuration, tenda wifi password change, router login and solution if not done, wifi repeating (using router as tenda wifi extender, parental control settings and router reset.