Please, use the /feed route. 
Example: https://nostr-to-rss.deno.dev/feed?users=npub1auwq2edy2tahk58uepwyvjjmdvkxdvmrv492xts8m2s030gla0msruxp7s,npub1wqxxe0cjaxnvmrv4lkvx8d5dlft7ewswyn09w5v7fg7642fgzm7srucxws&kinds=1,30023&replies=true&whitelist=art,food,cooking,painting
 users is the list of npubs to follow, 
kinds are the nostr kinds to subscribe (usually 1 and 30023), and 
replies (true or false) is to indicate if replies are to be shown or not

 made by https://njump.me/nprofile1qydhwumn8ghj7emvv4shxmmwv96x7u3wv3jhvtmjv4kxz7gqyrh3cpt953f0k76slny9c3j2td4jce4nvdj54gewqld2p79arl4lwfwgcp6
https://github.com/gustavonmartins/nostr-to-rss