Afk for 2 weeks lol. You did not leave your PC on for 2 weeks without touching it, you saw you were pk'ed and instead of immediately appealing you waited.
The point of the window of appeal is so you can't get pk'ed then attempt to appeal weeks or months later when the evidence may have been removed or deleted. So it's only expected that evidence is kept up to a week (though we ask for it to last longer if needed)
Furthermore, to even have your appeal considered or to be shown the evidence for the PK you MUST follow and fill out the appeal format when posting. Which you have failed to do (twice). It is mandatory.
You were pk'ed by your faction for "failing to pay dues." This is a don's orders pk. Like others in this thread have said the don of your faction can order your death at any time, as is the risk of being a criminal.