Can't revert photos order

Hello, first it’s a great plugin and I love it. ??
Everything is working fine, but I can’t revert or change the order of the photos. I tried drag and drop, invert button inside gallery but nothing works. ??

Any ideas why and how to solve it please?

Thank you!

https://www.ads-software.com/plugins/photo-gallery-awesome-responsive-image-gallery/