@Chav Did you have use the official o2 return portal?

https://router-retoure.o2online.de/start/app/dashboard

Yes, i used it. 

Then you should send the receipt from DHL to o2 so that they can trace the router and refund the payment.

Hello @Chav ,

welcome to the o2 Community .

How are things looking like on your end? Have you had any further contact with us regarding the router and its return?

Kind regards, Sven

Hi, I sent a request via customer service, but I only received an automatic reply that i will receive a response. But right now, i still haven't received a response. Is this something you can help me with?

Hello @Chav,

I have entered a request for you with our logistics department about your return of the router for it to be checked 

Best regards,

Gerrit

Hi Gerrit, I still haven't received a response.

Hello @Chav 
I would like to take a closer look at you now. Your complaint about the returned and invoiced router has been forwarded to the responsible logistics department 

Please give us a little more time, it will be checked and we will respond to you once processing is complete. Thank you for your patience with this process 

Kind regards

Kathi 

Hi, Kathi, I think it is ok now. They responded already to my customer request last June 5. Thank you. 

Hello @Chav,

I see that the return of the router has been successfully checked and you will get the fee for it refunded 

Best Regards,

Gerrit