Register your FIDO2 key in your Atlassian account
Before you can use your FIDO2 key as an access method for your Atlassian account you will need to register the key with Atlassian using the following procedure;
Signing in to an Atlassian account with a FIDO2 key
Once you have registered you FIDO2 key with Atlassian the key will be ready to be used as an authentication method when accessing your account;