Can’t Set up conditioning options

Hello, I’m trying to create a cognitional options like the URL provided but when i select the required option and set up the conditions it don’t work and all choices disappear , what steps should i follow ? or there is a problem with the plugin ? it seems like a good plugin and i wana buy the pro version but really not sure whats the problem is it from the plugin or what?

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