The usual failure
Review request on day zero. Upsell before the box arrives. Shipping lies. The second purchase is left to luck.
What to make true
Truth, then use, then second purchase, then review. Post-purchase exists to make a customer — not to harvest a star.
Worked example
Keep it this plain. A team uses post-purchase as if buying the software installed the meaning. It did not. Review request on day zero. Upsell before the box arrives. Shipping lies. The second purchase is left to luck. The move is not a new integration. Truth, then use, then second purchase, then review. Post-purchase exists to make a customer — not to harvest a star.