System screen saver not working

I want to use that app for a Kiosk with authentification on Windows 10 with pGina and Logon with RFID-Tokens. So it is important that the system logs out automatically after a given amount of time. For that I use the LogoffScreensaver from AutoIT (https://www.autoitscript.com/site/autoit-tools/logoff-screensaver/). But that Screeensaver never starts, when your Kiosk app is running.