Sign in with your project account.
This is a temporary account — choose a password only you know.
Scan this with Microsoft Authenticator, Google Authenticator, or similar — the same way you already do for Autodesk — then enter the 6-digit code it shows.
Can't scan it? Enter this key manually instead:
Open your authenticator app and enter the current 6-digit code.
Ask whoever added you to this project to resend your invite.
Create a project from a Navisworks Clash Detective XML export. You'll be added as its admin automatically.