Photos in blog posts or while uploading aren't showing.

I’m not sure what I’m doing wrong, but most of my blog post photos aren’t showing up most of the time. Even when I try to create a new blog post, and upload a photo, they still won’t show.

Sometimes, if I hit refresh, the photos will appear. This has just been a constant struggle for the last couple weeks, and I’m so close to starting over on another blog site. Is there something I’m doing wrong?

I currently use Safari for updating the blog, but I’ve also tried it on Google Chrome.