Android troubleshooting

App Links, empty resolve, wrong environment.

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	Likely cause
App does not open from https	Host mismatch, missing `autoVerify`, missing Play App Signing SHA-256
`resolveDeferred()` always null	Emulator, already consumed, sandbox/production mix
Double navigation	Your nav graph also handles https — use `DEFERRED_ONLY`
Resolve error	Wrong `clientId` / `publicKeyId` / `env`

Terminal

adb shell pm get-app-links YOUR.PACKAGE

Never put the private PEM in the app.