Connecting two displays with USB C dock with extended view

Hi!

I bought a new Macbook Pro 16" and a new XtremeMac Type-C docking station.

I wanted to use two external monitors by connecting them to this docking station like i flawlessly did on my 2012 Macbook.

The displays are connected by HDMI and Displayport and are both from LG (same type).

For some reason the Macbook only sees one display and thus mirrors the screen to both monitors.

I'm not able to use the monitors seperately.

I also tried to connect one by HDMI and one by VGA, but this does not solve the problem.

I also tried connecting a different type of monitor i had (AOC), but gives the same result.

Where do i start?

Thanks a lot for your comments.

Vloet