Hey there,
Just tried adding my first feed from substack, and it is erroring out. Substack claims to provide an rss feed: https://support.substack.com/hc/en-us/articles/360038239391-Is-there-an-RSS-feed-for-my-publication-
And the w3 validator seems reasonably happy with it: https://validator.w3.org/feed/check.cgi?url=https%3A%2F%2Fon.substack.com%2Ffeed
But no dice getting it into newsblur. Thoughts?
You can use <![CDATA[On Substack]]> as a testcase, or <![CDATA[Bet On It]]> is the one I am actually trying to add.