Images from my blog appear broken on Pinterest

Hello,

I always pin my images to Pinterest with no problem. Today, when I tried to pin them, they appeared broken in Pinterest.
https://www.dropbox.com/s/s1un08oca7zlxr8/Screenshot%202016-08-08%2017.24.17.png?dl=0

Is it an update that is messing it up?

I already cleaned all my history and cache. Re-uploaded the images and nothing works.

This is the post that is having problems:
https://lifeismessyandbrilliant.com/bullet-journal-currently-watching-layout-setup/