Your ad can be shown in Yandex search results, on sites in the Yandex Advertising Network, and on pages of the Ad Exchange. A detailed description can be found in theAd Serving Rules.
The Light interface of Yandex.Direct only provides general statistics for all campaigns are available. To see them, click the View statistics link on the My ads page.
Only the Professional interface of Yandex.Direct can provide impression statistics for a specific ad. To switch to the Professional interface, open the My ads page and click the Switch to Professional interface link. Make sure that Professional is selected in the window that appears and click Start using the service.