I am ios developer. I implemented the account link based on this tutorial https://developer.amazon.com/en-US/docs/alexa/account-linking/app-to-app-account-linking.html。
Ilwa flow issue
use login account and click allow button, then redirect the universal link. but i can't handle universal link. because ios appdelegate method "application:(UIApplication *)application continueUserActivity:(nonnull NSUserActivity *)userActivity restorationHandler" not called.
the screen display my universal link website.
I gathered information from the Internet
By definition, Universal Links do not work when they are redirected from another URL. This limit is meant as a security measure, preventing a website from opening apps without explicit user intention. Redirections will only open an app from a Universal Link only if the user tapped a URL from the same domain as the redirected URL.
This problem has been bothering me for a long time，I'm sure there's no problem with my universal link. because I click my universal link on the memo，can launched my app。