Hello @Mihai22 

Can't you find any of these in your fusebox, living room or somewhere else or are there just the cables in the pictures in your post?

And is your T-Mobile subscription allready active?

My T mobile subscription is active since 18 december.

At that moment when router comes I have tried to activate by my self I found this socket with a lot of wires...who lived before I don t know what he did.Anyway T mobile scheduled for me an appointment with Guidion...but unexpected they are not coming.They rescheduled for next week.

That looks quite a mess. Try to call Guidion for this new appointment. That will give the best change on a working connection.