Search the board for KLM seats. You'll find that folks consistently have trouble getting "P" and exit row seats on KL metal, regardless of status.

I've found that you can't select seats on KL metal through View Reservations at all, and can usually only select regular seats through View My Info. Recently I was able to select a "P" seat on KL metal for my non-elite dad on a Rulebuster ticket through View My Info, though, so who knows.

Remember, View Reservations and View My Info are DIFFERENT seat selection systems. They look similar, but are not the same.