RSS Feed not updating

After installing the latest version of wordpress, my RSS 2.0 and atom feeds don’t seem to be updating. I’ve also set up a feedburner feed and that seems to be working fine. Is this a problem with my installation or something else? When running these through a feed validator they were never quite right and had some sort of “obsolete namespace” error. My site is at https://zarzuelaknitsandcrochets.com/blog