I have not scanned the 2FA QR code

The QR code shown during the device registration cannot be regenerated or displayed again.
If you do not capture the QR code, or lose the device storing the code (also called a token), you will be unable to access your account.

To have your existing token deleted so another can be generated for your account, log in to my.nesi.org.nz and select the option 'Manage Two-Factor token' under 'Account'.