Reset your password and get access to Aconex.
Navigate to the login screen and enter you email address.
Note: Each Aconex instance has a different login screen. See the list of instance here.
If you need to access the Lobby, you can find the Lobby sign-in screen here. Note there's a separate Lobby for the AU2 instance.
Email didn't arrive? Check your junk or spam folder. You can also retry sending the email after 10 minutes. If it still doesn't arrive, contact your IT administrator.