You're probably pretty sick of the same question appearing in the month. Alas, I did look through the other threads asking about the same problem and have tried applying your suggestion/solution to my own, but unfortunately does not work.
The problem is no matter it's Normal or Full Screen (which by the way, the image doesn't show up in FS mode), the link attached to the background image will just not work at all. Nothing to click.
I already entered the URL in the Background Image Link box for the Image Set, as well as the Background URL box for the image itself, but neither does anything.
I tried looking through my theme's CSS for a class that might be hiding the background element, but I cannot for the life of me find anything. The reason is because prior to making this plugin work, I noticed the #wrapper class in my theme was hiding the background, so I had it removed and the image showed up.