You have purchased a server and not sure what to do next, first off nice work navigating that!
Your server will begin to be setup, please wait for an email from us! This will roughly take around ~11 minutes to complete if the purchase was successful. If you have not received an email from us check your spam folder in your email, if you found nothing support ticket and we can get this investigated!
Once you receive the emails, one will contain the username, password, and another your server details.