What to do when Facebook pulls the wrong image for sharing
After you have clicked Scrape Again, one of two things may happen.
You may still get an error message. If that happens, you just continue clicking Scrape Again until it comes out right.
When everything is OK the page will show your image, title and description like you have specified it in the sharing settings of your plugin.
Next: How does this work, and what if I can't get rid or the error messages.