Plugin copyright issue

> I created wpTree plugin and upload it on codecanyon.net https://codecanyon.net/item/wptree/10663913
> I found similar plugin “Vertical and Horizontal Tree” https://WordPress.com/plugins/tree-website-map/ in wordpress plugin list.
> I installed it and check code, and I found that this plugin used my code
> and idea.
> Also author(wp_buy) sell it as pro version, You can check this URL. https://www.wp-buy.com/product/wp-tree-pro/
> Please remove “Vertical and Horizontal Tree” plugin from wordpress plugin list.