Interactive Flat Panelsiwb not working with extended desktop

Hi Iv tried the above and it didn’t make a difference , the board works fine when cloning the display but the teacher has been using it extended desktop way so the laptop can be used at the same time to display emails etc.  Im aware loads of people are having similar issues from reading forums and no one has came up with a solution.

I have got two laptops that are identical and it works on one and not the other would it be possible for someone to log into our machine to check to see why it dosent work?

Thanks Kallum