My top bar is not showing/is hidden

This may be because it isn’t activated. You need to make sure that your Top Bar’s status is set to “Active” in the settings (left menu of your WordPress admin panel).

Top Bar with sticky menus

Sticky menus (navigation bars that stay at the top when scrolling) are known to not play nice with notification bars (or any fixed element in the website). If you have a fixed navigation in your website and can’t see you top bar, it could be that it’s hidden by a sticky menu. 

In this case, try enabling the Detect fixed navigation feature (this feature is enabled by default for anyone installing the plugin after May 2, 2020).