You use are able to use the Sharing Debugger to view the information shared on Facebook from your website.
The Batch Invalidator allows you to refresh this information for any URLs including one or multiple.
Open Graph markup allows you to set up how your website content appears to others when shared.
Visit the Facebook Sharing Debugger Tool: https://developers.facebook.com/tools/debug/
Add Your Url
If it doesn’t update, click to scrape it again.
May require a few attempts.