A possible solution
So apparently the problem was not the docking station… The problem is having displayport and HDMI working simoultaneously.
I rapidly searched for this on google and found a Windows user that described a trick to make it work: change the refresh rate of one of the monitors.
So I went to display settings, I opened the settings for the monitor that did not work (the displayport one, which is being detected and I can even move the mouse into it, it’s just that the display is 100% black). I changed the refresh rate from 100hz to 60hz, and then boom! It works. When gnome asks me to keep changes or revert, I click revert and it continues to work at 100hz!
The problem now is that if I reboot or logout then this ““fix”” is lost and I need to perform it again.
Does anyone actually have an idea on why this happens and if there’s a way to fix this?