Show more text elements in popup (e. g. Category)

First of all: thank you very much for this nice and free plugin.

I’m using an image gallery. When I hover over the images, the category, the title and the description are visible – exactly the way I want it.

But when I click on the image and the popup is opened, there is only the title and the discription visible. I need the category to be there, too.

Is there a way to do it? Neither in the documentation nor in the plugin settings there seem to be information about this.

Thank you very much in advance and kind regards!

Schmufus