To help users regain access, you can send them an authentication registration request so they can register a new passkey, or manage and reset their authenticators. For the full steps, see Send Authentication Registration Request and Manage Passkeys for Team Members in Passkeys & Social Login. Recovery options also depend on how the user signs in (social login vs. passkey), as below.
If you use a passkey to sign in, use your credential manager (e.g., 1Password, Apple Passwords) to authenticate at the Iru login page. If you no longer have access to your passkey, an Account Owner must send you an authentication registration request so you can register a new passkey. Account Owners can also manage or reset authenticators for team members in Passkeys & Social Login.