The affiliate programme

People ask what you use. Answering that with your own link pays you a share of every payment they make for a year, at a rate that climbs as more of your referrals stay.
The rung is set by how many referrals paid in the last thirty days.
A referral keeps paying you for a year, renewals included.
Commissions transfer to your connected Stripe when the payment clears.

The full ladder and attribution rules are published in the affiliate terms.