Keyboard Zoom
 

Trying to play on my laptop, and can't get the keys for camera zoom to work at all!

Zoom keys dont appear to work in the normal mode where you can mousewheel

If you change to the Chase Camera (default is T), then the zoom keys will work. It functions a little different but might be a suitable workaround

Theres a Camera category in the keys tab in options (Alt-O) if you wanted to change any of the camera/zoom keys