We have made the decision to remove Crystals as a currency option to purchase All Access Arena Pass and VIP Arena Pass. These will now be purchasable via IAP only.
In turn, we have decided to increase the amount of Crystals that will be offered as rewards through other sources, which will allow you to acquire Hunters & Cosmetics more easily.
We appreciate your understanding as we make changes to improve the overall game experience and apologize for any inconvenience caused.