On your referrals dashboard, you can track Clicks, Signups and Commission Earned.

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Clicks: These are the total unique clicks on your referral link
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Signups: Total number of user signups through your referral link. They can be free trial users, or paid subscribers.
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Revenue: Total revenue generated through your referral link
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Commission Earned: Total commission earned by you
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Commission Paid: Total commission paid to you