When sharing links on LinkedIn and Facebook, the preview sometimes doesn't reflect the correct description or content specially if the actual page is updated. This is technically due to the cache implemented by both social media network to speed up the loading of the page. LinkedIn and Facebook store the preview of each link that was posted on the platform. To make sure that the preview is updated with the latest content on the actual page, you can do the following.
1. Visit https://www.linkedin.com/post-inspector/.
2. Enter the URL on the text box and click Inspect button.
1. Visit https://developers.facebook.com/tools/debug/.
2. Enter the URL on the text box and click Debug button.
You will notice that the preview will be updated when you post the same link again.