Hello,
Sorry to hear you are having issues. You on Windows 10 or 11? If Win10 it still work. "Hold Shift key">Right click on taskbar icon->Select "Run as different user". But if Win11. There is an extra Steps: Right click on taskbar icon> "Hold Shift key">Right click on app icon appear on the popup menu >Select "Run as different user" refer screenshot below.

Thanks
Basj,
Stardock Community Assistant.