Rekit on kill does nothing
Run
/perplayerkit location rekit-kill at the affected position. See Worlds and regions and Rekit on kill.
Regear restocks nothing
See Regear.
Chat is full of kit messages
perplayerkit.kitnotify defaults to operators. Grant it separately for other players.
See Messages and broadcasts.
A message shows %player% or the wrong text
Message text lives inplugins/PerPlayerKit/lang/<code>.yml, not config.yml, and placeholders use {player}, not %player%. See Languages.
Menu titles show raw tags like <blue>
Look for an unclosed tag earlier in the same line, and escape any literal< as \<.