Ranks

All ranks with a lock symbol are not accessible until reaching a higher prestige level. 

To unlock them, you need to gain Prestige Experience by doing Prestige Daily Quests or instantly unlock it by paying Courage Coins.

If you want to instantly unlock a rank without waiting, you can pay Courage Coins by clicking the instant unlocking button. 

By buying the new rank you will only gain the Prestige Level but not unlock any additional benefits.