Poor gameplay in online mode. You need to disconnect cheaters who exploit the system. Some players would lag cheat and reporting them would only lead to a generic "check your internet connection" response from the mods. Events take a lot of grind to get rewards which will expire.
GALA Sports
2023年8月28日
We apologize for the unsatisfactory experience you had with the game. You can contact our customer support system to report these issues, and our staff will investigate the situation you raised. Regarding your last concern, we will suggest to the development team the possibility of extending the expiration date for event rewards.