Podcasts work on MySqueezebox but not on LMS Podcast app

Anyone know why this would be an issue? I can see the podcast episodes on both systems, but when playing from LMS, I get "Couldn't resolve IP address", but the podcast plays fine if I connect to MySqueezebox.com.

Podcast RSS feed is
https://www.blubrry.com/feeds/jordanbpeterson.xml

I have tried to replace the www.blubrry.com hostname with an IP address, but that doesn't work either.