Cloudflare’s security measures, like Bot Fight Mode and blocking “AI scrapers and crawlers,” are inadvertently blocking legitimate RSS readers from accessing websites without notification or explanation. This requires RSS reader owners to contact each website owner individually to be unblocked, a time-consuming and impractical solution. While Cloudflare offers a bot verification program, it has its own issues, as some verified RSS readers are still being blocked. To work around these restrictions, website owners can whitelist RSS readers by identifying their user agents or IP addresses. Open RSS is a nonprofit that relies on user donations to continue providing quality services.
https://openrss.org/blog/using-cloudflare-on-your-website-could-be-blocking-rss-users