If you no longer need two-factor authentication by using a Universal 2nd Factor (U2F) security key or if you replace your U2F security key, you need to unbind the U2F security key.
Procedure
Log on to the Account Center console. On the Security Settings page, click Unbind next to U2F.
Click OK. After you unbind a U2F security key, you no longer need to use the U2F security key for two-factor authentication when you log on to the Alibaba Cloud Management Console.