If the wrong information displays when you post to social media, it's most likely because the social network is sharing an older version of the page. In most cases, you can resolve this by telling the social network to fetch the most updated version.
Before you begin
The content social networks display depends on the social network, the type of content you share, and how you share it. It's a good idea to read about what's expected before you start troubleshooting. To learn more, visit Which images display in social posts and What text displays in social posts.
If Facebook doesn't show the correct information, it could be an issue with the image size, or because Facebook needs to clear its cache. You can usually fix this with Facebook's Debugger tool. To learn more, visit Troubleshooting Facebook sharing issues.
If a LinkedIn post displays outdated content, add /?1 to the end of the URL when you post it. This tells LinkedIn to fetch the most updated version of the page. For example, if the URL you want to share is "https://yourdomain.squarespace.com", share "https://yourdomain.squarespace.com/?1"
If a tweet displays outdated content, enter the URL into Twitter's Card Validator. This tells Twitter to fetch the most updated version of the page and shows a preview of the tweet.