I have the same problem as a previous customer (Sergio) with the header slider not showing images anymore, everything is just white. The slider still works but doesn’t display images, you can see the text though. The images will display in my MS Surface Pro and my Android phone in portrait mode but not in landscape mode.
I have never had a problem before, and it started suddenly with no changes made. I upgraded to the Sydney Pro II theme and even created a Crelly Slider just like my original Sydney flyer. I have also tried to turn off all the plugins except page builder and Sydney toolbox but the problem is still there. These help me fix this right away. Thanks!