Image (before&after) doesn’t show up

Hey there

I’m kinda desperate because I’ve been trying for so long but my before and after doesn’t show up and I don’t get why it doesn’t work.

[twenty20 img1=“3748“ img2=“3747“ direction=“vertical“ offset=“0.5″ align=“right“ width=“60%“ before=“Before“ after=“After“ hover=“true“]

is the code I used and I don’t know if there’s something wrong with it?

Plugin is activated and as far as I know, I also don’t have cache plugins who could caus problems.

(using flothemes)

I would appreciate a little help a looot!!

Thanks!!

The page I need help with: [log in to see the link]