Hi @yoventures, I am sorry you are having trouble. Is there a chance that your feed is publishing new articles only with a delay and backdated timestamps, as rss.app appears to be a website scraping service?
If so, this node may not be suitable for your particular use case. This is because the node will compare the timestamp of each feed item with the last polling time. You may instead want to consider using a full RSS reader coming with an API. Unlike n8n, RSS readers maintain a database of all the feed items they encounter, so you can, for example, retrieve all unread items regardless of when they were added to a feed.
I wrote about this a while back over here, perhaps you find this thread helpful.