After your certificate request is approved, you can download your SSL and intermediate certificates from the SSL application. For more information see Downloading Your SSL Certificate. These files must be installed on your Web server.
You can also download the intermediate certificate bundle from the repository.
Your SSL Certificate is installed. If you have problems, please see Test your SSL's configuration to help diagnose issues.
For more information on how to configure your Nginx server, see http://nginx.org/en/docs/http/configuring_https_servers.html#chains.