Hi @mllapan sorry to hear about the frustration, however, I’m afraid I did not clearly understand the challenge you faced with the plugin. Were you looking at importing feed items into your site from an RSS feed or publishing posts to an RSS feed? To import the feed items as post items, you’d need the Feed to Post add-on. For some more insight on the core plugin features please see: WP RSS Aggregator features
Regarding the option to generate custom RSS feeds. We have an article here on how to get started with creating custom RSS feeds.
In case this is not what you were looking for or I did not clearly understand the challenge you faced. Please feel free to reach out back, I’m happy to advise.
I know very well what I need to make this plugin do anything.
I do not rate plugins randomly without knowing what they can or can not, what they offer or not.
Your plugin that is in this free WordPress.org repository does nothing, you just use this repository as an advertisement for your plugin.
You deserve to be removed from WordPress.org.