To become an introducer you must have completed the first purchase. The minimum amount for the first transaction from new clients is $500/£500/€500. The first purchase can be either bundles or individual coins, as long as it fulfills the minimum amount.
After completing the first purchase, your status will change to Customer and you'll now have a referral link and code to share with friends.
See here the process to purchase a bundle. If you'd like to purchase individual coins, check here how-to.
Account holder: Clients that haven't completed a purchase. Account holders are not allowed to refer other users or receive bonuses until they complete the first purchase.
Customer: Completed their first purchase and are therefore eligible to refer other customers and receive a bonus.
You can check your account status by clicking here.