Why was the plugin for OpenCart rejected?

I submitted an OpenCart plugin for review, but it was rejected. Help find the reason for the failure and please give advice on publishing this plugin.


There’re free options available at –

This is a plugin for OpenCart.

https://www.opencart.com/index.php?route=marketplace/extension&filter_search=sitemap&filter_category_id=20&filter_license=0

I need to publish my plugin. Please advise me on why my plugin was not accepted. I have attached screenshots of my plugin and a preview above so that you can write possible reasons for rejection based on them.