While working on the landing page, I found that the social share tag is not posting any content on my facebook wall where its working fine on Twitter and LinkedIn.
Please let me know if there is any solution for the issue as I have tried static content and Meta tags both but this is not resolved.
It looks like recent policy changes of Facebook effected the social share "Facebook" functionality and Marketo would be working on the fix.
Link to the facebook policy changes: https://developers.facebook.com/blog/post/2018/04/24/new-facebook-platform-product-changes-policy-up...
We have identified a service issue that prevented the creation of lead records in Marketo through the Facebook and LinkedIn Lead Gen feature between Saturday 10/13 and Tuesday 10/17. The problem has been resolved, but if you have any questions, please Contact Marketo Support and we'll be happy to check it out!