How to connect range extender to usrrname anf password WiFi

I have a range extender and I have used it at my house before easily with no problem. Currently I am away at college and the Wi-Fi only reaches half of my room so I figured why not being my range extender. The problem is at home all you need is a password. Here you need to add a username and password but it only gives me the option for a paraphrase Or in normal case where you put in the password. How can I make it work?