During the setup process, a user can fetch the default wireless credentials from the back of his device to connect to the extender's network. Once you are done with the connection process, you can type myrouter.local in the address bar of the browser to connect to the setup wizard of the range extender. The remaining configuration process including the wireless details and login password can be done through the web management window of the range extender.
https://my-router-local.net