Hero Image Not Loading on Portrait Mode

Hello! I am new to ui/ux design and I followed the 21 day portfolio course to the publish part. As I test it on different device, I found that the some of the picture in hero image won’t load. For laptop and tablet mode, initially only three pictures load, after several refresh, all of them would load. But for my phone (iPhone 12), none of the pictures load even with refresh. I tried different browsers and the result remain the same. I even tried to pulled up the garciaux.com to see if it’s the problem with my devices, but that one worked fine first try. It does work perfectly on preview though. Any idea why?

here is the published website: http://pippi-portfolio.webflow.io

Here is the read-only link: Webflow - Pippi's Portfolio