I have a blogger website that I have recently migrated to amp-html.
I am having problems with the usage of amp-img tag. Firstly blogger does not recognize the First amp-img as the first image of the post and fails to make the default thumbnail out of it.
Also when sharing a page on facebook using amp-share, the selected image is invariably the fallback image, that I have tagged with og:image property.
The image resolution is more than the minimum mandated by facebook. I have seen this arrangement working fine on other websites. Can someone please have a quick look here: Pratyush.info