I have added all numbers at
https://www.kpn.com/hussel/aanmelden.htm
5 month ago
One was added successfully and one not
Addresses are correct

@vit Welcome to our forum. 

I tried to add the other number to the household too, can you check if you can share data now?

Thank you very much @Rutger_  but I still see only 2
here: https://mijn.kpn.com/classic/#/tv-internet-bellen/mkmv

*Admin* Post editted because of privacy. 

@vit That is weird, because I see the same KPN ID for the 3 numbers. 

Have you tried adding the number again in MijnKPN and if you did, what screen did you get trying it?

Thanks for helping @Rutger_ 

The result is next:

@vit I checked the situation, and for the number ending om 491 the house number addition is missing. 

Because I need to do a verification I can't do this for you. 

I would advice you to call my colleagues on 0800-0402, when the house number is changed everything else should work!

@Rutger_ Thank you for help. It works