Missing images on iOS device only

I have noticed that some of my images are not showing on IOS devices. Furthermore, according to SEMRush, the images are missing. On my windows PC and Android devices I see the images.

Livechat staff looked to have sorted this in SEMRush which shows the issue as resolved now, but when I view the site on iphone ios, the images are still missing.

https://cdn.livechat-static.com/api/file/v2/lc/att-old/8801096/ee221afe1c2bf3754fdd698a8d9e55c1/2019-09-06_12-46-31.jpg

https://www.********farr.com/