Hi tilly7175,
Thanks for explaining what you’ve tried. Since your Authenticator codes and passkey aren’t working, the next step is to reset your 2FA.
Please go to https://www.myob.com/au/contact-us and open MOCA, our virtual assistant, without signing in. Choose the 2FA reset option and follow the identity-check steps. Once it’s reset, sign in again and set up your Authenticator app. We also recommend adding SMS as a backup and saving your recovery code.
More info: https://www.myob.com/au/support/login-and-2fa/getting-help-with-two-factor-authentication
Regards,
Genreve