To get or change a Roblox Display Name, you should first log in to your Account Info page under Settings, then select the edit button next to the Display Name entry above your Username.

Gamertag, username, display name; a Roblox player has multiple names, each having a purpose. Thankfully, usernames and display names chosen years ago can be changed.

Steps for altering your avatar’s appearance in every Roblox experience, from adding and removing items to changing your skin ...

How to change my Roblox password If you've forgotten your password you just need to click the Forgot your username/password? link on the Login page.