I'm going crazy about this issue, since weeks ago i'm trying to get in facebook main news feed the big/new format for news.
If i post to my fan page test (Venezuela Indignada) in the timeline, the news look great, you can check:
The trouble is right here in news feed, as you can see, the image is too small (90x90 px):
I would like to get the right setup and see my posts like these posts:
All my featured images have more than 200x200. I tested featured images from 630x420, 660x346, 700x366, 800x420, 900x600, 1200x630 and 1200x675 px and i still getting the same 90x90 thumbnail in the main news feed,
so the news don't help me to get more engagement as the new post format.
You can check the media size that i setup in WordPress:
This is the only active plugin that i have enabled:
I have the WordPress 3.7.1 and i'm using the WordPress twelve theme, could you help me to identify what's going wrong to get the new post format?
Some image size i take from this URL where explain what you need to do, but it doesn't work for me:
Thanks in advance for any help that you can give me,