Can you tell me how to make an ad unavailable after before undergoing re-moderation? That is, if the user has changed the ad, it is automatically hidden on the site, but if it is indexed by search engines, then by clicking on the link you can still see this ad, although it has not yet been approved

@atba
You may check Item Validation Plugin:
https://osclasspoint.com/osclass-plugins/protection-and-spam/item-validation-plugin-i60

I use this plugin already) He hides the ad until moderation only on the site, but the ad link is all exactly available!