My heavenly System (Necromancer and summoning class I got)

I am Ye Ming I am a detective I am 27 years old I transmitted to a place called tianhu continent they summon us to kill demon king but they check the status window of mine they find out I don't have any class I just thrown out of the castle I choose Necromancer you have choose Necromancer you can choose one more class I choose summoner in summoner which class do you want if you exceeds your limit you will get curse .Gods .Demons .Monsters . all of these I choose all of these You have choosen all of these We have said that if you exceeds your limit you will get curse you get curse Curse : Now your heavenly system is updated into heavenly badluck system what the fuck can I change my summoning class host you are unable to do it taking a short break of 1 month