You can usually track the status of your referrals and rewards by logging into your account and visiting the referral section. This section typically provides information on the number of referrals made and the status of each referral.

Typically, referral programs are designed for new customers, but it's best to check the program terms for specific eligibility criteria.

If a customer has checked out as a guest before, or entered their email in any capacity they will not be able to use the referral link (as they will already have an email associated with their name) and will therefore not be eligible.

Advocate and Friend email addresses are similar
Order is not the customer's first order
Order is placed by the Advocate
Order is placed by someone with the same name as the Advocate