What to Do If The 2-step Authentication Code Does Not Work

If the 2-step verification code does not work properly, please try the following:

1. Enter the latest passcode:
   Start the 2-step verification application (Google Authenticator) that you have set up on your smartphone, and enter the "latest passcode" which is updated in a certain time (30 seconds). Please note that the old passcode cannot be used.
2. Enter the passcode once it has been switched over.
   If a certain amount of time passes during input, the passcode will change. Therefore, when entering a passcode, please wait for the passcode to be switched once and then enter the updated passcode.
3. Check the automatic correction function of the clock.
   In order to use the 2-step verification application, the "time" of the device (smartphone/tablet) must be set correctly.
   
   To ensure your device always displays the correct time, follow these steps to enable automatic date and time settings for Android and iOS.

Please also check:

1. If the automatic setting function of the device is turned on by yourself.

2. 2-step verification app for previous devices. If you have changed your device and still have the 2-step verification app on your old device (smartphone/tablet), please try the passcode from the 2-step verification app.