Hi @ramnathk,
Thanks for reaching out.
I checked and it’s a bit weird, the view in the actual page is different on the The Grid’s preview.
I went ahead and fixed the library that loads it properly. As for image sizes, please change it in Admin > The Grid > Global Settings > Image Sizes and change them according to your preference. Then install a force regenerate thumbnails plugin and regenerate your images, changing the size has no effect on existing images. BUT, I’m not sure how this affects the images pulled from facebook so the resolution could be facebook limitation too.
Thanks!