No checkboxes showing up in my view.

Hi there,

I have a custom content type called store, in which I mapped several different stores. Users create accounts and associate themselves with a store. At the moment, I realized that there's one store that I would like to exclude from a registration page.

I looked into how to hide the store and came to this widget as the only way of excluding that store from being selected. I created a view with the widget which excludes that store's NID and prints them out. However, a select list does not show up. I have attached a screenshot to illustrate. Perhaps I can get some guidance as to how to implement this?