The Referral Payout will be 5% of the Referred Creator's Earnings:

There are no limitations on the number of Referred Creators or your total Referral Earnings.  We offer Referrals up to level two.

Two Level:
Two Level referrals means that you earn revenue off referrals of creators your refer refers.

If someone signed up but did not use your referral code, we are unable to link that account to your referral. It is automated and cannot be changed.