When refunds are processed through payment systems such as Google Pay, Apple Pay, or AppGallery, it can result in a negative gems balance. If you have used or consumed the purchased resources and then received a refund, the corresponding amount of gems will be deducted from your game account.
Note that exploiting the refund system, whether for personal gain within the game or for external benefits, is strictly forbidden. Abusing the refund system can lead to unfair advantages, distorting the competitive balance, and negatively impacting the experiences of other players. It erodes the sense of achievement and progression that all players should have the opportunity to enjoy.