1. Please make sure Facebook API key is added to Easy Social Share Buttons - https://myhometheme.zendesk.com/hc/en-us/articles/360004545354--Share-on-Facebook-not-working-Where-to-add-Facebook-API-to-enable-it-
2. Facebook use Featured Image when someone share it, you need to add it to every property
a) Adding Featured Image via Backend
b) Adding Featured Image via Frontend - enable field on your submit property form by drag-and-drop
3. If the link was already shared, please scrap information again
b) paste link to property e.g.
c) Click Scrape again
Now if someone share it on Facebook again it will works fully correctly