Front page slider not loading on mobile device

Hello folks.Your Sydney theme is about the best free theme I’ve seen on WordPress.Thanks for the awesome job.
I developed a website with it and found that the home page slider doesn’t load on mobile,but it does on desktop.url is
Kindly advice on how to fix this.

Hello there,

Please try to visit Appearance > Customize > Header area > Header Slider. Then delete the existing images and upload the new ones.

Let me know how it goes. I’ll wait to hear back from you regarding your stats.