If you have registered multiple security keys, you can selectively remove individual ones.
Remove security key (FIDO2)
Log in to MyAccount using FED-LOGIN. You will be automatically redirected to the “Home” start page. Navigate to the Login & Security tab.
Navigate to the Login & Security tab and go to “Registered security keys”. If multiple security keys are registered, select the tile corresponding to the relevant security key and click Remove.
To remove the security key, you must authenticate again. Click Continue.
Read the important notice. To remove the security key, click Remove.
A green pop-up message confirms the removal of the security key.