Expand players and inventories amount

What I can do bro the amount of player and inventories are maximum 1200 but we want to expand to 1500 to 2000 because we want to grind best players. You see, it translates that your amount has reached to maximum 1200 but we wanted expand EA how can I do reply please what's the issue. I gonna wait for your reply. So expand it. How can I trade for this.