I tried adding Medium.com feeds to NewsBlur, according to their docs, e.g. https://medium.com/feed/@authorname. NewsBlur says that there is no RSS feed there. I tried http instead, same issue.
When I curl the URL, it returns fine. Given Medium is a pretty big blogging platform nowadays, it would be good if those feeds would work with NewsBlur.
Thanks for writing in, and we apologize for this experience.
This is a known issue, and our engineers are working on it right now. As soon as they resolve it, all systems will return to normal. We ask that you bear with us.