What are you doing, exactly, when you say "publish"?
I have created an online magazine, and have various images through-out the publication, Using Indesign and creative cloud i published the article online, but when i check none of the images were display.
What version of InDesign? What filetype are you exporting to? Are you using the new beta Publish Online feature (which is beta)? Were you links all good before "publishing"?