Images blurry on bloglovin' not every image showing up

Hi Rob! I’ve installed the plugin, and now I have more images showing up on my bloglovin’ feed (yay!) but still not for every post. Plus the images that do show up now are blurry. I have changed the image size to large instead of thumbnail but nothing’s changing. Can you take a look please? Thanks!

site: https://www.pullasophie.com
feed:https://pullasophie.com/feed/
bloglovin’: https://www.bloglovin.com/blogs/pull-a-sophie-14202795

https://www.ads-software.com/plugins/featured-images-for-rss-feeds/