No internet in wifi (Kabel) after the activation date. New Customer.

Which router do you use? An own or rented one? 

Why did you post this twice? You already opened a thread with this issue:

https://hilfe.o2online.de/dsl-kabel-glasfaser-router-software-internet-telefonie-34/keine-internet-nach-aktivierung-kabel-670380

I posted it twice because i can explain the situation better in english.

​@5G_Tester Hi, Thank you for the quick reply again but we already talked on another thread. I tried rebooting hard resetting, the router is from O2 and they already have the correct MAC address. It still doesn't seem to work I dont know why.

OK, but FYI, you could have continued the original conversation in English ;-)

A moderator can merge the threads.

​@bs0 I am new to the community so I didnt know there was a english community as well untill today. thats why.

For the problem solving:

You should call the “Störungshotline” (0800 5251378) and report that you do not have a connection. Maybe you have a friend who speaks German and call for you.

But first, you can try the “O2 my service app”. 

Have you done a factory default reset on the router?

Sometimes it is useful to get the router run.

What is the power/cable LED doing?

​@5G_Tester thanks, I have already called them they have created a ticket and said that technical team will contact me. Maybe only an technician can fix this. 

Unforunately you have to wait until the technician will repair it. 

If you have a contract for mobile internet with O2, you can get mobile data for free.