If you've posted an ad to Facebook from VIgniter and the image or description isn't showing or isn't showing up properly, you can force Facebook to re-scrape the open graph data and display it properly, just follow these steps:

  1. Post your ad to Facebook
  2. Click the link to go to your landing page
  3. Copy the entire URL that you see when you are on your landing page

  4. Visit this url: https://developers.facebook.com/tools/debug/ 
  5. Paste the URL from your landing page into the Sharing Debugger and click "Debug"

  6. The old data from Facebook will be displayed
  7. Click "Scrape Again"

  8. The updated text and image will display, and Facebook's cache will be updated
  9. Delete the ad you posted to Facebook
  10. Re-post the ad