I have the same problem with my blog! I tried to contact Bloglovin' 3 times, and I don't know if I was intentionally ignored or not, but I never heard back from them.
You have FAQ on the "help" section on Bloglovin', and one of the questions is about our problem exactly: Why don't images from my blog show up in posts on Bloglovin'?
That's the answer:
Bloglovin' is looking for images associated with the posts in your blog's RSS (See "What is RSS?").
If your images are not included in the RSS, they will have to be added for Bloglovin' to be able to find and display them. Please contact whoever is responsible for the technical issues of your blog for further assistance.
If the images are already included in the RSS but still not showing up on Bloglovin', they might be in a file format we don't recognize, yet. Please contact us using the form below and we'll look into it!
Now, I do have "RSS" and "RSS Links (Jetpack)" in my widgets, and I really don't understand what else can I do.
Also, I did have pictures shown on my posts when I first started my blog, but I guess I messed something up and I have no clue how to fix it.
My blog is http://www.yeahitsprettyawesome.com/
Please help, I'm desperate!
Thanks in advance,