This error means that the advertiser’s link isn’t added on the anchor he requested in the original briefing, but on a different words/group of words in the published article.
Please check the anchor that was requested (in the Briefing section or in the Content section in case the advertiser had provided the content himself) and make sure the anchor in your article is exactly the same.
If you believe the anchor used in your article is the one requested in the briefing, or have agreed to a change of anchor with the advertiser in the messaging tool, please contact our support team.