If your new account with Blacknight has been setup you will have received login information in the welcome email. You can use the details provided in this email to log in to your Control Panel and upload your files through the "File Manager" or see your FTP details.
Direct Admin Your FTP details are the same as your control panel log in details. You can set up email accounts under "Email Accounts" and your website files need to go into: /domains/domainname.tld/public_html
Helm You can see your FTP details under Domains >> Domainname >> FTP Accounts. You can set up email accounts under "Email Accounts" in the Domain Menu and your website files need to into the wwwroot folder.
cp.blacknight.com You can see your FTP details under Websites >> domainame >> WebSite Configuration (windows) or FTP Access (linux). You can set up your email accounts under "Email" and if the domain is not synchronised please contact us.
You might need to make sure the appropriate subscription is selected in the Subscription drop down menu first if you have multiple subscriptions.