Facebook Open Graph not showing on timeline

I'm using FB Open Graph in my application. It's not fully working. When I post a object it appears in the user's recent activity; however, it doesn't appear on their timeline. The metadata has no errors and I'm using the FBGraph gem but it also doesn't work when I do it using curl. Any advise to fix this?

Does Facebook use Open Graph?

Through the Open Graph protocol, you can tell Facebook how your shared content should be displayed on Facebook. This protocol tells Facebook which title, URL, image, and description of your blog post/page should be used when your content is shared on Facebook.

What is Facebook Open Graph initiative?

Open Graph is an internet protocol that was originally created by Facebook to standardize the use of metadata within a webpage to represent the content of a page. Within it, you can provide details as simple as the title of a page or as specific as the duration of a video.

Have you tried to use 'fb:explicitly_shared=true' in your URL. Refer: https://developers.facebook.com/docs/technical-guides/opengraph/explicit-sharing/