Once your Site Owner resets 2-step verification (MFA) for your account, you will receive an email prompting you to set up your authentication app again.
To reconfigure MFA and regain secure access to your account:
Go to app.aerocentral.com
Sign in with your username and password
When prompted, set up Multi-Factor Authentication
Follow the on-screen instructions to configure your authentication app
Enter the verification code from your app to complete the login