Zoooom You Might Need This To Make It Work

I installed this plugin and I could not get it to work until I stumbled across a suggestion that if I clicked on the photo and then added zoooom to the class for the photo block and then it worked like a charm. I have only tried the free version. The spelling of zoooom with 4 ‘o’s is deliberate. My main comment is I would make that instruction a lot clearer as I was just about to give up on the plugin.