FYI I use leaddyno as well, and there's an option in the commission settings to pay on first purchase only, or recurring. I've got my app using the custom API,

FYI I use leaddyno as well, and there's an option in the commission settings to pay on first purchase only, or recurring. I've got my app using the custom API, and it works just fine (although lately a lot of ad blockers have started blocking leaddyno js, but that's a whole different can of worms)