There are several reasons for the freezing of the account on the platform. The first one is when the user changes the security settings or replaces the device to modify the initial security settings. The platform will ensure the security of the funds for 24 hours and automatically restore normal functions after 24 hours of risk control. The second reason is when the user cancels orders multiple times. The platform will restrict the buy coin function after reaching the cancellation limit and impose a lock-up period of 15 minutes to 24 hours, which will be reset to zero the next day. The third reason is when the platform triggers risk control, such as triggering a security risk warning with Huimang transactions recently. The account will be restricted and frozen for 60 days. The fourth reason is when placing orders, the corresponding amount of assets will be frozen when placing limit orders, advanced limit orders, take profit, and stop-loss orders. The frozen assets can be restored by canceling the order. The fifth reason is when the 't+n' security protection limit is triggered after purchasing coins. For safety reasons, you need to patiently wait for the system to automatically lift the restriction after a certain number of days. The sixth reason is the freeze by the 'sif' authority. After receiving the freeze letter from the 'sif' authority, the platform will restrict the account as required and freeze it. Users need to contact the relevant authority to verify the reason. The freeze by the 'sif' authority is rather special and should be treated with caution. The above are several situations that may cause account freezing.