Connecting your custom domain is step 5 of the launch sequence: (1) connect Stripe, (2) create and attach your paywall product, (3) set up email passing before the paywall, (4) optionally enable ad-pixel events, (5) connect this verified custom domain, then (6) publish and verify with a test purchase. Step 5 is a hard gate in front of step 6 — finish the verified domain here before you publish and run your test purchase.