You can always edit any account usernames inside SilverStripe, which also includes the administrator. To perform the changes, kindly follow the simple steps as follow:

Login to the administrative area of your SilverStripe website. Once you do so, click on the Security option from the left sidebar menu.

You will see a list of all users on your SilverStripe website. Click on the one that you wish to edit. In our case, this is the Default Admin user.

Simply edit the details that you wish to change for the user.

NOTE: Click the Change Password button if you need to make some adjustment.

When you are ready with the changes, click on the Apply Changes button below the form.
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