Hello,
Since about >1 year, it seems all feeds from domain jeuxvideo.com are broken.
Feeds looks ok when you look at the code of the xml, and are ok too in a tool like feedly…
Could you have a check please ? Newsblur is too precious for me to have another tool 
For example, this RSS :
https://www.jeuxvideo.com/rss/rss-ps5.xml
Many thanks by advance !