How do I refer someone to HP Instant Ink?

https://articlescad.com/how-do-i-know-which-ink-cartridge-to-buy-for-an-hp-printer-747964.html

To refer someone to HP Instant Ink, visit the HP Instant Ink website and log into your account. Locate the "Refer-a-Friend" section and follow the prompts to generate a unique referral link. Share this link with your friend, who can use it to sign up for HP Instant Ink. Upon successful enrollment, both you and your friend may receive a free month of Instant Ink service as a referral reward.