I am using two features only: https://postimg.org/image/59lnzqbx3/
Crosshair and vehicle gunner display.

I've set the keybinds to both: https://postimg.org/image/wz5e4sjl3/

When I press SHIFT+F11 in game, it turns on or off the crosshair. However, when I press SHIFT+F10, I does not do anything. If I press SHIFT+F2, I can see the tab for vehicle gunner display but I can't play the game then.
I ticked the "Show on 0 kills", as well. Still doesn't show up. Tried reinstalling, as well...

Help.