I've recently changed password for feeds. I forgot to set is also in QuiteRSS (my bad). Problem is, that there's no any message about wrong password or authentication at all. So only news are not read.
Maybe part of problem is, that when password is incorret only empty page with message is returned.
I guess it would be nice to return this message if format of feed is not correct, and mark feed with error. This way I can check what the problem is. Now it's just heuristics, because also feed status and everything looks like it's just fine, only that no new items are collected.
Thank you for your help.