When registering for an account or performing an account function that requires authentication, you will be sent a verification code(via the registered email or registered phone number) and will be requested to input that code. This operation is between the user - the account and the server.
Sometimes you might experience a delay in receiving the verification code. In some cases the code might be sent to the users junk/spam folder. Please ensure that you enable the permissions for you to receive this verification code.