To change the first and last name that appears on your Fanatiz account, you must login to your account and do it from your profile.
The username is the name that will appear on the Fanatiz platform when you use it and you can change it as many times as you want.
To change your username, follow these steps:
Login to your account.
Go to "Profile" in the upper corner.
In the box "First name" or "Last name" change the username you want to have.
Click on "Save changes".