How to move my modem, to improve Wifi signal?

Dear ​@gio.cre you can place your modem everywhere in the house.

You only need a proper LAN-cable to connect your router with the fiberunit (glasvezelkast) in the meter cupboard (meterkast)

Thank you! ​@JanD 

But does that mean I have to run a LAN-cable from the meterkast to the living room? Can I not use the extra attachments in the wall? (The one I posted in the first picture)

Dear ​@gio.cre 

That would be possible via the right point in the photo, provided the other side comes out in the meter cupboard. The left connection in the photo cannot be used with fiber optics.

Thank you again for your help ​@JanD !

So if I understand correctly, I will need 2 cables, one to attach the modem to the connection in the wall, and one to attach the "glasvezelkastje" to another connection in the meterkast, correct?

Do I then need to connect the glasvezelkastje to this connection that I am showing in the picture? What kind of cable would I need?

And, ​@gio.cre, did you succeed?

​@Denise van KPN Yes!

Thank you so much to ​@JanD for explaining, in the end there was a loose cable hanging from the ceiling in the meterkast (I didn't consider it because it was just a white cable with nothing written on it), I attached that to the glasvezelkastje, then moved the modem to the connection point in the living room and now it works!

Dear ​@gio.cre 

nice to read that it all worked out and works well.
Have fun with your connection and I enjoyed helping you.
My English is just as good as your Dutch, but Google translate is a handy tool.😉😎

That is very good to hear, ​@gio.cre! Thank you ​@JanD for your help!