Powerpoint

Cannot get a Powerpoint presentation to run through Quelea.I run a three screen setup. One for me at the desktop, a projector onto the front of house screen and a feedback screen at the back which the presenter uses.
I can import and open the Presentation, on going love, it shows the slides on the love screen on my computer but nothing on the other 2 (front and back)
I run 2021.0