There is a problem still. But I noticed that your theme was modifying the Swipebox script (a JS code somhere) and the lightbox appearance, now it causes the issues like not displaying the lightbox. It’s hard to say where it is and what it really does.

Please try to find and remove that code, but first switch to a different script (in RW settings) and see if it affects SwipeBox only or other lightbox scripts too.