Xbox on PC / Teredo can't qualify?

I have a Fritzbox and the Teredo problem is known, but I have already released all the ports, which I do not actually have with DLan and have also worked the list for troubleshooting on the MS side.
As you can see, it still does not work.
I've read a lot, many have the same error message, but apparently with a different cause.
Can someone help me here?

It is up to your tv. That you can change the tv settings