If, however, sanctions from the Google Panda algorithm followed and the site was filtered, then it is worth knowing that this happens automatically. There are basically two ways out of this situation.
you can simply do all the necessary work to bring the stockholder data site content into compliance with the verification criteria and wait for the next algorithm update. These updates occur approximately once a month and after each of them the robot rechecks the sites. If everything is really in proper form, the filtering will be removed automatically. However, the return of the site to its previous positions in search results should not be expected earlier than in a few months.
Another option is basically similar to the first one, with the difference that instead of waiting for the automatic response, you can write a request to the search engine's technical support service. In this case, the recheck may occur faster, but you will also have to wait for the resource's rank to be restored.
In conclusion, it can be added that in order to avoid problems with resource filtering and the subsequent need to carry out a decent amount of work, you need to monitor what is added to the resource. In this case, it is better to spend a little more time and effort right away than to lose much more later due to laziness or relying on "maybe" .