I have a Heroku app example.herokuapp.comwith these meta tags:
<meta property='og:type' content='website'/>
<meta property='og:title' content='MyApp'/>
<meta property='og:image' content='https://example.com/_n.png'/>
<meta property='og:description' content='This site is awesome'/>
Therefore, when I exchange example.herokuapp.com on Facebook, this data is displayed correctly. However, I set up my own domain on Heroku ( example.com), adding a CNAME (alias)pointing to example.herokuapp.comand adding a domain on Heroku.
Now when I submit example.com to Facebook, no details are displayed.
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