Check the social security ID entered by x.

When I check social security online, when I enter my ID number, the tail number is X, so I still enter X, but when the initial password is entered into the last six digits of my ID card, X should be changed to 0.

I wonder if it is in the same position as you.

Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.