How do I get the referral benefit?

After logging in, find your referral code (one letter + four digits) on the Referrals page and share it. When your friend signs up with the code and completes the trial lesson, you both instantly receive 3,000P. When your friend makes their first payment, you both earn up to 27,000P more depending on the plan length, plus 1% of their payments for 3 months.