When I start my app I always receive this message:
[connection] nw_resolver_start_query_timer_block_invoke [C35.1] Query fired: did not receive all answers in time for graph.facebook.com:443
I am using this plugin: https://pub.dev/packages/facebook_app_events
The events works perfectly fine on Android. I've tried many options (the ones I found on the internet) but none of it worked.
If you are working on iOS 14+ do check this App tracking permission that is required for events tracking.
https://developer.apple.com/app-store/user-privacy-and-data-use/#permission-to-track
Also, while testing on real device (iOS) check if your device's facebook app "Allow Tracking" is allowed. You can do this by checking facebook's permissions from Settings.
I finally found a solution for it.
In the main.dart I just need to call:
FacebookAppEvents().isAdvertiserIDCollectionEnabled(true);
And then it worked. I hope it works for you too!