The answer of Google Support to me
Hello Andrey,
Thank you for your response.
We took a look into your query. We have reviewed your publication and noticed that the image tag is not encoded as intended(). We’ve attached a screenshot for your reference.
There are few requirements which need to be followed while adding the image to your content, they are:
The images should be minimum of 800 px on a side
The hero image encoding should be done using the tag and the attribute class should be: . We suggest you use this attribute class to encode the hero image so that one image can be indexed with the articles in Google wide surfaces.
We also noticed that you are using both <description> and <content:encoded> tags in all the feed URLs of the publications. Instead, we suggest that you use any one of the tags. If both <content:encoded> and <description> tags are present in the feed, Google News crawls the tag with the least number of characters.
We encourage you to encode images directly in your feed using Media RSS tags. For more information, please visit the “Technical Feed Requirements” and Feed content guidelines Help Center article pages. We also suggest that you get in touch with your web developer or web master to fix all the issues in your feed.
Once resolving all the above mentioned issues and if you still face an issue, please reach out to us by elaborating the issue and with relevant screencasts as evidence of the issue and we will be happy to help.
If you have further queries about Google News, please consult our Help Center or connect with other publishers in our Google News Help Forum.
Best Regards,
Koustav