Tiled Mosaic doesnt work

I have this installed almost a year now.
All worked fine. Since the last 2 days galleries that have tiled mosaic do not work with that nice effect they had. Images simply open their larger version in the same window.
I have removed all plugins, left jetpack only and nothing works.

I only use the galleries option from jetpack.

Site is https://agreekadventure.com
Check this page for example
https://agreekadventure.com/windsurfing/kitesurfing-windsurfing-historic-kos-big-blue-surf-center-7969

https://www.ads-software.com/plugins/jetpack/