If payment is not made in time, the social security (medical insurance) card will have its medical insurance function suspended.
The employee social medical insurance premiums that should be paid must be paid within the current month, and then you can enjoy medical insurance benefits as required in the following month.
If you stop paying social security fees in the current month, the medical insurance accounting function will be stopped or suspended starting from the 1st of the next month. Therefore, the fund payment in the children's social security card suddenly cannot be used because the payment is not made in time and the social security (medical insurance) card has suspended the medical insurance function.