You'd like to access your new Enterprise Team, but the link in the email you received results in a 404 when attempting to open the Dashboard.
Initially, the only person who will be able to access the Enterprise Team is the person who received the email titled "Package order: your-team Enterprise Team has been provisioned on Heroku". If that person is new to Heroku, they will first need to log into their Heroku account to open that link. If they have never logged in before, they will need to reset their password by clicking the Forgot Password link. Once that person is logged in, they can add anyone else they want to the Enterprise Team as outlined in our Enterprise Onboarding Guide.