I need help with “WooCommerce Orders Tracking” plugin

So I just paid for the premium version of your plugin, and tried to add 17track carrier “Posta e Kosoves” which is very well listed on their own website: https://www.17track.net/en/carriers/posta-e-kosovës

But for some reason it doesn’t appear in the plugin > Add Carrier section, where you can select a carrier from 17track.