Problem with jquery 'show more' button

I apologize if this is in the wrong forum. I’m looking for someone to help me fix an issue with the ‘load more’ button on my site here: http://www.adventure-journal.com/tag/video-of-the-day/. It should expand the content area down as more posts load but it isn’t working. I did do an update recently so maybe it has something to do with that? Can anyone help? I’m willing to pay for assistance.