Postpaid sim card doesn't work

Hello, basically I ordered new SIM card. It came by courrier he did some sort of verification process. I put it in my phone. It asked me for pin oke oke 0000. And I tried using it. But card has no signal. I also wanted to register it in mijn kpn app but I didn't receive phone number with new card.

I tried almost everything and I'm tired. The last one possible thing that potentially went wrong was that I missclicked stay with same number option during order. And that's why card isn't activated. What should I do guys?

PS. I tried calling KPN but it's dutch only ayayayay