Antwort auf: Neue Security Key App (1.01) wird von Google nicht unterstützt
In this instance you’ll want to reach out to Google and inquire as to whether they’re overtly supporting the Security Key application as opposed to Fido U2F.
As you mentioned however, you can still use the Fido U2F with your Ledger connected to add an extra layer of security and authentication for your unique apps/accounts.