User blog comment:Dragonjet/KC3改/@comment-87.148.19.212-20150518151631/@comment-1820055-20150520111247

hm this is odd. though before we proceed, I just wanna make it clear that the extension does not detect battles before you install/re-install it. So to start recording and filling up history, you'll need to run sorties with the F12 panel.

note than re-installing also reset all history.