Hello @Raijmond110 

Quickest way to get a new modem is to call Customer Service on 0800-0402, you will get some options in dutch, just ignore that and say you want to speak to an employee.

Last time you had support from KPN, a mechanic fixed your fiber optic box. Ans now youre Box 12 is broken? Some really bad luck! 

You still need support? Or did the customer service help you to get a new Box 12? 

Hi @GeSp and @Jeroen_dB ,

Yes the issue is resolved, new modem was delivered and old one was returned.

Thank you both very much for your support!