Syllogic, thanks for your response — it is greatly appreciated.
The system went through a build, which might be the reason for the “couldn’t connect to host” error.
What has bothered me was the second error. I have been testing with 3 different feeders, as I described in my post, all displayed the same error. However, the feed was validated by a W3C validator, and URL is correct: you can see it here
