Hey Chaon,
Can you try again and let us know how it goes? What I did was that I changed the default column from 'none' to 'null'(attached).
Now it is showing the post so i suppose you completed the setup process.
I see another bug right now.
While on post (entry) view the post image shows the default placeholder. On all other views such as frontpage and category instead of showing the image placeholder it shows a black background with the message
No compatible source was found for this media.
Screenshot attached of mobile and desktop viewport
Should i make a new thread about this?