Hello FMCalisto,
I am the plugin author, and on the description for this plugin there is a section “Usage” that explains that this plugin adds a shortcode [plugin_cards]. All you need to do to use the shortcode is paste it into a post or page.
So for example, if you want to display cards for the top most popular plugins in the repo, you would add this shortcode:
[plugin_cards browse="popular"]
I’ve tried to spell out exactly how the use the plugin in the description, but if there are any parts that are unclear I’d be happy to further explain or add missing information to the plugin description.
Would you consider changing your review? I’m happy to work with you to get the plugin working for your needs, but the plugin itself works great and doesn’t deserve a 1 star review.