I'm Scandinavian too and I understand Swedish. I know the last couple of years "Black Friday" has been a thing, but it's nothing compared to the real one here in the states. Some of the so called "deals" are actually worse than regular price in Sweden. It really isn't comparable and sales are not even close to the same, so doubt Postnord or any other company is having trouble keeping up.
Well, apparently it was the most packages they've ever had - in history. On any day, ever.
http://www.gp.se/ekonomi/postnord-slog-rekord-efter-black-friday-1.11257964
https://www.expressen.se/brandstudi...t-over-2-2-miljoner-paket-efter-black-friday/
But it mostly went according to plan, although I've got late packages which I attribute to this.