You have a girl in Lv maxed? look what it Lv and compare with your lv
i.e. if you are lv 7 with your character, look if the girl is maxed 7 too.
btw guys now I see many many bots players or not lv 20,21,22. After I win them I only earned minimum xp 23.
When this happens. I choose to go Harem boss because, after battles or Arena or Harem boss will recharge another players to battle.
Update
Please Kinkoid if you can post some notes about this.
I really want to know what happened, now I'm in Lv19 with character and xp nonsense to reach Lv19 with the girls 99999999999
And Maybe Bot or Not a Lot of Players with Girls lv20,21,22.