some images show blue question mark on apple devices

Hi,

I’m getting more frustrated every minute. Every safari browser in phone mac ipad shows on some images a blue question mark or no image but just the title and i can’t figure out why. My site is: https://www.stunning-news.com

I hope somebody has the solution because i don’t know what to do anymore.

https://www.ads-software.com/plugins/imsanity/