Portable Libreoffice Impress problem with remote controller

Hi,
I'm a professor at the University. I use Libreoffice for my lectures. Most classrooms don't support Libreoffice so I bring my usb with portable Libreoffice installed.

The problem now is with the remote controller to move slides back and forward. This is another usb dongle, and it is recognized by the computer, but libreoffice Impress does not react to it. It is a bit frustrating as I have to be using the keyboard all the time instead of walking the classroom.

Has anyone experienced this before? Anyone knows a work around?

Thanks!