404. That’s an error.
The requested URL /add?feedurl=http%3A//xn--fbkq961v3qci66bcfszfmq0ok9kqqax07d.kwlrn.com/atom.xml was not found on this server. That’s all we know.
/add?feedurl=http%3A//xn--fbkq961v3qci66bcfszfmq0ok9kqqax07d.kwlrn.com/atom.xml