The social security account of Shanghai Company cannot be logged in.

1, which belongs to the background system problem and has nothing to do with your own account. Sometimes, the system will be updated. During the update process, the website will be temporarily unable to log in. After the system problem is solved, you can enter the account password to log in.

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