Dropdown Menu Not Working

Hello, I am hoping that someone can help me with this. I am using the eximius theme, and have not used wordpress for over a year. When I first created my website, I thought for sure I was able to use dropdown menus in the past, and had to figure out how not to add pages to a dropdown. Now, I can’t figure out how to get it to work. Is there a way to turn it on and off or something? I created all of my pages under a parent page, but they are not showing up.

Any help would be greatly appreciated.