League Screensaver displays a black screen

I downloaded the program and made a playlist, but every time I click "preview" there's just a black screen. I whitelisted the program on Malwarebytes. I have also tried setting the timer to 1 minute and waiting for it to go to the screen saver on its own, but instead of anything showing up it just goes straight to my user login screen. I've also tried uninstalling and reinstalling the program.

Could it be incompatible with Display Fusion? I use it so that I can have different wallpapers on my monitors (I use 2 monitors).