Make sure that all of the following criteria are met:
The site has at least one page of product offers (for example,
The content with the products is static, and is not loaded automatically to the page (for example, using a script). Products must be present in the page's HTML code.
Each product has an image, price, and title in the structured data format.
Site indexing is allowed in robots.txt. The robot crawls sites at an optimal speed to avoid excessive server loads. If the data on the site changes more often than the indexing frequency, it's possible to adjust the crawler rate manually. For more information, see the Yandex.Webmaster Help.