Plugin [Easy FancyBox] Stopped working

Hi!
I’m from Poland so I ask about forbearance.

I used Easy FancyBox and it worked great but I did something (probably I installed bad pluging but I delete it next) and now EasyFB don’t work. The pictures are open in new tab.

One of my post for example:
https://szuta.pl/2012/03/29/obrazy-kelly-vivanco/

I don’t know what i should to do. I reinstalled this plugin and installed “Use Google Libraries”… Help me please ^^