Instagram Widget: Image Not Loading On Frontend

Hi, I linked an Instagram profile and added a block on the homepage, the Instagram images load fine when I preview it but when I visit the homepage it's not shown, when you hover over you can see the caption popping up but the images aren't displayed. I can't post the link to the site here, please email me for it or pick it up from my profile. Looking for a quick solution, we made the site live and this issue cropped up. Thank you.