@Thor24:
I have asked the same question on the German side of games planet .
Here is the answer:
There were some fuss about the game, but we are not affected .
And further:
Thus, it looks like that Games Planet Keys already sent on 27/01

Hi Team, there has been a lot of news about physical copies of the games being delayed outside of the US. Will this affect your orders at all?

the keys are World Wide

Any idea if this will be region locked? Wondering if it'll work in Australia to be specific.

@chrisv, thanks, I think it was a currency conflict at my end.
Can you check into keys being sent early?
Facebook news:
Dying Light
Yesterday at 1:47pm ·
OFFICIAL STATEMENT:
The game will have a global digital release on PlayStation 4, Xbox One and PC of January 27, 2015.

@Dissyllabic Brake – Please review your paypal settings. This is the first time I hear that. We have no special settings that would force to charge credit cards at PayPal.

@veav No, you can buy games only once per cart, but feel free to checkout twice to get a second copy of the game.