Log in to the Advanced Authentication Self-Service portal.
Click the U2F icon in Add Authenticator.
A message Press button "Save" to begin enrolling. is displayed.
(Optional) Specify a comment related to U2F in Comment.
(Optional) Select the preferred category from Category.
Click Save.
A message Please touch the flashing U2F device now is displayed. You may be prompted to allow the site permissions to access your security keys.
Touch the FIDO U2F button when there is a flash on the device.
A message Authenticator "U2F" enrolled is displayed. If there is no flash for more than 10 seconds, reconnect your token and repeat the steps.