If you do not have the Mod Loader installed, you can download it from here.
One click install doesn't work if you've installed the Mod Loader without administrator permissions.
You can fix one click install by launching the Mod Loader as an administrator and hitting the "Reapply" button in the settings.
Tired? Busy? Phone call? Boss annoying you via zoom meeting?
Simply stick the game into pause mode. Press the P button to pause, and again to restart. Simples.