Your Depop username cannot be changed once your profile has been created.
However, you can always close your current account and create a new one with your preferred username, if available.
To close your account, send us an email at firstname.lastname@example.org from the same email address used during registration. This is important to verify your identity. Please include your username in the email address.
Once we notify you that your account has been closed, you will be able to create a new one using the same email address.