Add credits to members offline to share principles (with time restrictions)

Implementation Method:
Create an InviteUser_NewUser table. The structure is as follows:

Then follow my ideas:
After the user receives this link
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Go to the website publicity page and use session or cookies to upload the userid
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Click "register ".
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Check whether the userid is the same as the userid of the current Month when the password is DateTime. Now. Month. If the password is different, it expires.
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Transfer the userid to the registration page (if it is not a cross-origin domain, simply say cookies)
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Execute the registration process and insert data to the user table
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In the same transaction, insert a record to the InviteUser_NewUser table. NewUserID is the currently registered user ID, and InviteID is sent through request. querystring (or recorded in cookies)
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Complete Registration
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The user enters the mailbox to activate
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Execute Activation Process
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Search for the user ID in InviteUser_NewUser. If yes, record the InviteUserID of the current record and update the user's points.