Mobile Image Issue

Hi there,
I have a site for my client that is having some issues when viewing on mobile. There is an old image showing up on the mobile version (only) on the site that should not be there. The image isn’t even in the media library any longer but is still showing up on the mobile version. Even after cache has been deleted and browser history. I’ve even tried removing the “viewability” on everything besides the desktop for the photo to see if that helps – and it’s still there. How can I fix this? The photo with the issue is located on the “About” page. It’s the woman’s photo. It shows up fine on desktop – but the mobile version is an outdated photo that needs to be removed.