PICTURES ARE NOT SHOWING…HELP PLZZ

Please help…. for some strange reason a few days ago my pictures were showing perfectly now my pictures arent showing… I working on a news site, The funny thing is they show when i click on them to read a full article but when im on the main page they dont show.. I called my hosting company to see if there was any issues, they told me they saw the pictures and everything was working fine. Im using the latest version of firefox, I cleared my cache thousands of times and i tried different browsers. I have no clue on what to do next, please can anyone help me oh and by the way my site is https://www.coldbluepress.com….Thanks so much