I bought this item in the shop to change my username and I don't know how to use it; here is it: New Identity (single use)
It was like 2,500 SB Points ;(
@FujoshiKyojin go here: Inventory and then click on "configure" and type in the username you want and if it's not already in use by another user you will instantly get the chosen new username and also be sure to know that after that you also need to login in with that new username.