Bartosz, thank you for the reply. :)

Your suggestion did make make the images appear larger! :)
But unfortunately the lightbox content is still being displayed at the left side of the screen (like I mentioned before.)
Here is another screenshot I took from my phone after I applied your fix:

I checked to see if the plugin was being restricted due to the fact that I had my thumbnail images in an html table, but it still resulted in the same error…