I bought Gems, but they did not show up in my account.

Due to high volume of players purchasing, there's a possibility that your purchase may be delayed. Kindly wait within the 24-hour period for your purchase to reflect in your account. If you have yet to receive your purchase after the aforementioned period, kindly contact our Game Support through the link provided below together with the following information:

● Transaction ID/Order ID of your purchase
● User Code
● Date and Time of your Purchase
● Country
● Name of the Bundle

Game Support page