[X2Go-User] Debian Jessie + Openbox / Not working keyboard shortcuts

[Lmhelp1]

Hello,

I am using Debian Jessie + Openbox.

When logged into the machine itself (not via X2Go), I usually hit the 
keyboard keys Meta + t to start a new XTerm.
To be able to do this, I added the following keybind into the OpenBox 
configuration file "/etc/xdg/openbox/rc.xml":
========================================
<keybind key="W-t">
   <action name="Execute">
     <command>xterm -fn 10x20</command>
   </action>
</keybind>
========================================
Hitting Meta + t, successufully starts a X terminal.

Also, I can hit:
Ctrl + Alt + F1 to F6: to switch to the first to the sixth console.
Ctrl + Alt + F7      : to switch to desktop mode.

These keyboard shortcuts do not work when I am logged into the machine 
via a X2Go client.

Is there something I can do to make these shortcuts work?

Thank you and best regards.
--
Léa Massiot