YII2 Mail Registration, the first success, the second time is not, but retrieve the password function but sent out

I use the Yii2-user component set up the mail registration function, the first time with the QQ mailbox registered under, success. But then want to register a when found mail published, a little sign up, refresh the registration page, there is no hint, debug bar logs also didn't see what, I thought may be later write code when changed what inverted configuration error, but with the first registration of the account to try to retrieve the password function, Successfully sent and received.

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I use the Yii2-user component set up the mail registration function, the first time with the QQ mailbox registered under, success. But then want to register a when found mail published, a little sign up, refresh the registration page, there is no hint, debug bar logs also didn't see what, I thought may be later write code when changed what inverted configuration error, but with the first registration of the account to try to retrieve the password function, Successfully sent and received.

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