Most projects in this segment now look the same. Free registration, but in order to play and earn money, you need to replenish the balance with in-game currency and only then earn. There is a certain element of justice in this, but you can also see it in a pyramid of financial dependence.
The problem is that otherwise people would create multiple accounts to game the system.
Multiple accounts are normal and cant really be get rid off since they would take advantage as much as they could but to know that play to earn games does require investment which
means that they would put up more risks than to those who had one account so its still like a double edge sword if you do ask me.