Master Token bug

15 / 0 / 16 third by gold second by damage to Champions first by healed first by damaged taken second in team by wards placed

IN JUNGLE and still no master token ???

I am playing quite long with Zac and i think it is now bugged because I am not getting anymore master tokens. I had really nice performance at some matches but nothing. With other Champions I can get Master Tokens easily. Please look at my statistic. It is really sad.

My matches without master token

http://matchhistory.eune.leagueoflegends.com/en/#match-details/EUN1/1501603934/205482314 http://matchhistory.eune.leagueoflegends.com/en/#match-details/EUN1/1434339101/205482314 http://matchhistory.eune.leagueoflegends.com/en/#match-details/EUN1/1436193597/205482314 http://matchhistory.eune.leagueoflegends.com/en/#match-details/EUN1/1526634717/205482314