I have used on Reddit the RSS https://www.reddit.com/r/fefe_blog_interim.rss and you can curl it or use Brave etc. and see the XML but since some days Newsblur does not like and results in 403.
Also the PRO function to use the Website itself does not work…
I also tried the Wizard, selected the Reddit, searched for the RSS, clicked it, looked fine and after subscription it failed 
Any ideas what is wrong?
Thx,
Jogi