Rules And Equipment
The ball can generally be played as a volley, but must first touch the ground on the return of a serve. Direct contact with the player's own or the opponent's mesh side wall or the back wall leads to a fault. However, a return played off one's own glass side wall is allowed.
No, that is a fault.
Yes, in some facilities the doors are not locked. Players can run outside to play the ball back into the opponent's court from there (not possible on some courts, e.g., if they are not at ground level).
Fault. The ball can only be played by one player.
No, the game can continue.
No, that's a point for you. However, the game continues if the opponent touches the ball before it hits the ground in your court. In this case, they are allowed to reach over the net.
Yes, that is not allowed. Reaching over is only permitted if the ball bounces back from your own side, for example, after a smash.
Yes, touching the net is not allowed.
No, the point goes to you.