Hi , i am watching a tournament (mixed doubles) and one of the players is complaining to the umpire with regards to the service of his opponent (the female). The female backhand short serve is somehow strange, she start with the regular starting position but once she start to draw back her racket head she also starts to raise/lift/move up the shuttle with her left hand (right handed player) around two to three inches then release the shuttle. it is still obvious though that this player hit the shuttle still within waist level (9.1.5) since strike it when the shuttle is falling down not when it is going up. And this is what i can understand from the umpire's explanation though i am in the bleacher that the female player release then strike the shuttle at the waist level and so the game continue with that. I am trying to look in the Badminton Law but i cannot find any rule to determine if this method of service is a fault or not. Can somebody pls help clarify? Thanks.