If you don't use your original cell phone number or email, you can enter [APP->My->Settings->Account and Security->Account] page, select email or cell phone number, get the verification code to fill in, then enter the new cell phone number or email account, get the verification code and submit, then you can finish the account replacement.

Note: If you can't get the verification code of the original account, you can select the email or cell phone number again, click the email/mobile phone number is no longer available, and finish the identity verification by entering the account password.