Hi there,
I hope you are well today and thanks for posting here.
Are you facing the same issue as described in the following topic?
https://colorlibsupport.com/t/facebook-post-showing-sample-text/#post-57750
If yes then please try deleting the facebook cache of your site from Sharing Debugger - Facebook for Developers
If you are not facing the same issue then could you please describe it a bit more in detail so that i can help you?
Kind Regards,
Movin