Good afternoon,

I'm sorry my German is not good enough yet, I hope English is not a problem.

Today the wifi was gone from a minute to another and it is not connecting ever since.
The error code is Kabel Fehler e1, but all the cables fit nicely.
What else can cause this error message? I can't even go the the speedport.ip site, it also does not connect (I'm using my mobile internet as I'm writing this).

Our router is a Speedport smart 4 typ A. 

Could you please help me? We can't really work without internet.

Thank You.
Dénes