Images don't show at posts.

Hi, I’m webmaster of a huge blognetwork site with some famous youth’s who blogs.

Since yesterday the images won’t show when they post.

I’m not sure, but I think it’s reletades to their custom-maded themes. But It were working a year until yesterday.

Images are uploaded and exists. But there’s only a link to the image.
You can see the issue at:
https://werun.se/desireenilsson
https://werun.se/moa
https://werun.se/hofh