The page where you set bids only shows the keywords for which ads are being shown then. Should you delete or update any of the keywords, the bids page will not display this keyword and clicks generated by it. The figure on the My campaigns will reflect all the clicks for all the ads for the entire duration of a particular campaign.
Statistics reports show click totals for the entire time that your campaign has run, both on search and in the ad networks.
The bid setting page only displays clicks from the past 28 days that affect the CTR of your ads on the first search results page. For regular ads, these are clicks on regular ads in search results, on desktop and tablets, and, for mobile ads, clicks on mobile ads in search results on mobile phones. If the ad group has both regular and mobile ads, the combined data is displayed.
To find out the exact number of clicks on your ad for a given period, for all available partners — for example, the number of clicks on a mobile ad in search results on desktop and tablets, or the number of clicks in the ad networks — use Statistics reports.
The page where you set bids only lists the keywords that your ads are currently served based on. If you replace or delete a keyword, data that was collected on it will not be displayed on the page where you set bids.
When statistics appear in the interface, as well as when calculating totals, the sum total of funds spent is rounded to two decimal places. The values are rounded off before or after the calculation is performed. This depends on whether you are viewing the general or detailed statistics. The total in the API statistics is not rounded off. This may result in slightly different total amounts.
Your ad is not only displayed for searches that precisely match your keywords, but also for searches that include your keywords as part of the query. Furthermore, the amount and size of competing bids for these searches can vary. Therefore the amount deducted from your account will never be more than the maximum bid you specified.
Acts (service invoices used to close a service transaction in the Russian Federation) are automatically generated at the end of each month. The amounts contained in acts are not subject to revision.
All Yandex.Direct advertising campaigns are regularly checked by an automatic system that protects advertisers from invalid clicks. The statistics for a given campaign may change after a check is performed.
If the total contained in the acts for a given period does not match the cost of the clicks reflected in the statistics, that means that the statistics for that period were revised. The discrepancy in the totals will be taken into account when generating the next act.
The number of real impressions and clicks within a campaign, as well as money spent, may differ from the predicted values, because the forecast considers only impressions on the main Yandex Search. In particular, such tools as Budget forecast and Wordstat do not take temporary targeting settings and impressions in the ad networks into account.
The point of comparing Yandex.Direct's statistics with Yandex.Metrica's special reports on Yandex.Direct is because Yandex.Metrica takes into account all sessions on a site, while Yandex.Direct only factors in clicks on ads.
Before comparing, make sure that your Metrica counter is installed on all pages of your site and linked to all your campaigns in Yandex.Direct.
Data from both Yandex.Direct and Yandex.Metrica may differ, which is normal and should not be cause for concern.
This difference may be due to the following:
You did not link your Metrica counters to several ad campaigns
There is ad blocking software (such as AdBlock) installed on the browser, operating system, or on the proxy server of the site user, which can stop counters from loading properly
Technical issues such as users leaving the site before the counter has the time to load properly
You added a vCard to your ad, and clicks on that do not lead to a session on your site
In the Yandex.Direct statistics from Yandex.Metrica there is data on page depth, conversion rates, and goal costs. If your site has several counters installed, then Yandex.Metrica will calculate the data for each counter separately, while Yandex.Direct will provide a total for all counters.