D&D Beyond feeds not loading properly


The D&D Beyond website maintains two RSS/Atom feeds that don’t seem to be working in NewsBlur. They are:

Posts: https://www.dndbeyond.com/posts.rss
Changelog: https://www.dndbeyond.com/changelog.rss

The feeds load fine in the browser, but not in NewsBlur. Does anyone have any suggestions as to why they aren’t working? Thanks.