The metadata for Nok Nok UAF authenticators are shipped with the S3 Suite and imported automatically during installation. But you need to download metadata for FIDO2 and U2F authenticators from the FIDO Metadata Service and import it into your deployment. For example, if you wish to allow Windows Hello authenticators, be sure to download that metadata from MDS, and import that metadata into the S3 Suite.
Use the command line interface nnl-mgmt.sh to download FIDO2 and U2F authenticator metadata. See section Download from the Metadata Service for details.
Review the report generated during the download and decide which authenticators you wish to allow.
Import the metadata for your desired FIDO2 and U2F authenticators. See section Import Metadata for details.