Hello, if you have a registered DingTalk account before, and want to use it again:

1, the previous registered mobile phone number must in normal use: it is recommended to use this number as the account to log in directly, the password can be clicked to forget the password, and receive the verification code to reset;

2. If the mobile phone number is not used: It is recommended to register the new account with the mobile phone number currently in use. Because the verification code is involved, if the previous mobile phone number is not received, the previous account cannot be logged in.