I have went through the Firebase Tutorial, I have implemented Firebase SDK + Dynamic links + Managed my app to support Associated Domains and everything works fine except th
@MKaro Can you add logging to your UIApplicationDelegate method application:openURL:options: and print out is there link passed to your App after first launch? If link is found it will be passed here. When Firebase Dynamic Links failed to retrieve the link, still there will be call to this method with "dismiss" link (this is poorly documented). If you do not see any calls to this method after first launch, this means Firebase Dynamic Links is misconfigured.
Another thing to watch out, Firebase Dynamic Links will check for pending dynamic link only after first install. You have to remove the App to force retrieving the link.
It may be worthwhile to try the first install scenario on WiFI vs Cellular. Type of the network may affect this.