Hello, the morning education machine prompts that the lock of the magic box needs to be unlocked with the parent control card. Simply select "Open Mode" or "Learning Mode" to unlock it. If the parental control card is lost, you need to buy it again. Do you want to know what kind of machine you use? If it is an early education machine X2 or X5, you can find the control settings in the last column of the rocker, press the OK key, enter the initial password of four zeros, and enter the parental control settings to unlock.