Xins Q Knock up

I just finished a game with Xin and his Q wasn't landing the knock up. i hit jungle creeps to test if i was just cancelling the auto on accident but no. his q does that damage but not the knock up on his 3rd hit during Q. Rito Plz stop hating me. you place me in bronze 5 because of 10 fuck up games and now you ruin the champ that got me out of B5 and was continuing to climb with? why do i pay money for anything when all you do is screw me over? plz fix...... i crie ever tim