Hi @pfzxxx
Thanks for sharing the URL. When we checked the page?through?Facebook’s Sharing Debugger Tool, it reported some errors related to your SSL, which is why the open graph tags aren’t being read properly by Telegram. See the screenshot for your reference: https://ibb.co/5K1jxBr
SSL error: Can’t validate SSL Certificate. Either it is self-signed (which will cause browser warnings) or it is invalid.
This is an issue with how the SSL Certificate works on your site/server. We suggest you contact your host provider for more information as your hosting provider needs to fix this issue. When this error occurs Facebook is not able to scrape the page contents as the SSL is not able to get validated by Facebook.
We suggest you resolve the SSL issue with your host provider and see if Facebook shows the right preview afterward by testing it out in the Debugger tool. For your information, some of our users in the past having similar issues were able to resolve by fixing the SSL certificate as prompted by Facebook.
We hope this information is helpful to you.