React Native troubleshooting

Expo Go, double linking, missing native setup.

LIVE SPECIMEN

Universal & Deferred Link Simulator

URLhttps://taqlyn.com/shop/checkout?cartId=cart_9841&promo=WELCOME20&aff=partner_8

Route: /shop/checkoutMode: Deferred Install

Symptom	Fix
Native module missing	Not Expo Go; rebuild a dev client
Double open of the same URL	`linkProcessingMode: "deferred-only"`
Android deferred empty	Real device — Android testing
iOS Universal Link ignored	Plugin Associated Domains; rebuild