To check websites statistics in the left menu choose Report-> Websites.
Central part of the Lite Ad Server will contain websites report. As you can see on the picture below websites report consist of navigation tree and statistics.
Basic flow of websites report corresponds to the flow of campaigns report.
The only important difference is that navigation path of the websites report is: website->zone->campaign.
Websites report can be useful if you want to compare performance of different campaigns in the website zone.