I saw the screenshot you attached. To display the products attributes as in our demo you need to use the WoodMart WooCommerce layered nav widget in the shop page widget area under Appearance >> Widgets.
I saw both the screenshots you attached. It seems that you haven’t made the correct settings for the brand filter from the widget that’s why it is displayed differently. Please make sure that you make the same settings for the widget as in the screenshot. This will fix the issue.