Double Lightbox Problem

Hello, I have bought the multi site version of this plug-in, and it worked perfectly until a few days ago… when it started to show me a double lightbox for every gallery type … look at this link: http://canoa.on-net.it/dolceria/photogallery

I have got the same problem on every NEW installation of the plugin, but not on the older ones…

Can somebody help me? I paid for this plug in and I like how it works but this problem dos not allow me to use it anymore…

https://ww.wp.xz.cn/plugins/gallery-images/