Share the link, keep 30%.
Every account has a link. Somebody buys through it, you keep 30% of what they paid. No application, no minimum audience.
One
Send your referral link.
Two
The click is remembered for 60 days, so it still counts weeks later.
Three
You keep 30% of what they were charged.
Questions
30% of what the person was actually charged, in dollars. Prices differ by country, so a lifetime bought in India earns 30% of the rupee price, not of $39.