If you have received an error while using the polygon filter (when creating a community page on your site or using the V2 email campaign search option), please contact support right away. They will be able to undo this for you. You can contact support by emailing them at firstname.lastname@example.org.
Generally you will get an error message if you are using the Polygon filter if you
1. Do not connect the first and last point.
2. Cross your lines over each other at some point.