What they're saying is there are two URLs associated with reporting services.

Web Service URL - Default is /ReportServer. This is for back end report maintenance. How you publish reports to the server through BIDS etc. It looks like an FTP site.

Report Manager URL - This is the user friendly report site. Default is /Reports. This will show icons for folders and reports and you're able to manage site settings and security.

Both of these URLs can be customized so you should log into the report configuration manager and see what they are set to and use the proper URL.