Rewarded Ads are no longer calling Server Side Callback with user_id included despite being logged in; Happened after switching to the new package

Bug report

Describe the bug

When logged in as an AUTHENTICATED USER, Rewarded Ads are no longer calling the Server Side callback with an included user_id after switching from the "firebase_admob" package to the "google_mobile_ads" package.

Steps to reproduce

Log in to the client Firebase App
Watch Rewarded Ad

Examine Firebase Function Logs for the Server Side Callback function The function log says: REQUEST:

{"ad_network":"5450213213286189855",
"ad_unit":"9495183932",
"reward_amount":"50",
"reward_item":"Reward",
"timestamp":"1618703780685",
"transaction_id":"3ed476fae24d994c07e4d240dfbc11e3",
"signature":"MEUCIQDF6u4pLZyCxR7ygZAN9XhAIUTG8EtOv1R3yAz4VwTedQIgHqwN9FyZNRYKo558ImTj3YyRAwiT-8Ib3YrRn2jfQYw",
"key_id":"3335741209"}

Everything is correct here except the user_id is missing now.

Expected behavior

The above log should have user_id included. The ad request is definitely happening when a logged in and authenticated user is initiating the request.

Additional context

Server Side Callback:

export const onAdComplete = functions.https.onRequest(async (request, response) => {
    console.log(`REQUEST: ${JSON.stringify(request.query)}`);
    const userWhoEarnedVibe = request.query.user_id;
    const rewardAmount = request.query.reward_amount;
    console.log(`USER ID is: ${userWhoEarnedVibe}`);
    if (userWhoEarnedVibe !== undefined && rewardAmount !== undefined) {
        console.log(`updating vibes...`);
        const rewardAmountInt: number = +rewardAmount;
        //add a vibe to the user who earned the reward    
        await db.doc(`users/${userWhoEarnedVibe}/bank/${userWhoEarnedVibe}`)
            .update({
                "numberOfVibesEarnedByWatchingAds": admin.firestore.FieldValue.increment(rewardAmountInt),
            });
    }
    response.send("complete!");
});

This line: console.log('USER ID is: ${userWhoEarnedVibe}'); ... always outputs: USER ID is: undefined

Note that ONLY thing I changed is migrating to the new package name and updating the client-side code according to the package documentation for calling Rewarded Ads.

I'm DEFINITELY logged in as an authenticated user while calling the Rewarded Ads.

I should also note that I logged into my AdMob portal and verified (again) that the Server Side Callback function IS valid. When I put a dummy user_id in the AdMob portal to test the Callback function, it DOES come in correctly in the log -- so it's not an issue with the Callback function. It seems the user_id is no longer being passed through the ad request.

Code used to call the ad:

myRewarded = RewardedAd(
      adUnitId: rewardedAdID,
      request: AdRequest(
        keywords: <String>[
          'pictures',
          'social',
          'friends',
          'photos',
          'beautiful',
          'video',
          'chat',
          'emojis',
          'magic',
          'funny'
        ],
        testDevices: [
          '4a6f3b42-0664-4aa9-8112-e112cf50f63c',
          '8146eb97fe468821fa02f5cca98649fa'
        ],
      ),
      listener: AdListener(
        // Called when an ad is successfully received.
        onAdLoaded: (Ad ad) {
          numberOfAdsLoaded++;
          print('Ad loaded.');
          print(
              "ad requests: $numberOfAdRequests, ad completes: $numberOfAdCompletes");
          if (numberOfAdRequests > numberOfAdCompletes) {
            print("should show ads");
            showAdsHelper(abortOnFail: true);
          }
        },
        // Called when an ad request failed.
        onAdFailedToLoad: (Ad ad, LoadAdError error) {
          ad.dispose();
          print('Ad failed to load: $error');
          dismissLoadingScreen(); //dismiss loading screen because it finished

          //if we requested an ad...
          if (numberOfAdRequests > numberOfAdCompletes) {
            onAdFail(); //show popup saying the request was denied :(
          }

          //reset everything back to zero because...
          //there is NO ad loading
          //there is no new request and no new complete (these are safe to go back to 0)
          // and no ads loaded
          numberOfAdRequests = 0;
          numberOfAdCompletes = 0;
          numberOfAdsLoading = 0;
          numberOfAdsLoaded = 0;
        },

        // Called when an ad opens an overlay that covers the screen.
        onAdOpened: (Ad ad) {
          numberOfAdCompletes++;
          print('Ad opened.');
        },
        // Called when an ad removes an overlay that covers the screen.
        onAdClosed: (Ad ad) {
          ad.dispose();
          print('Ad closed.');
        },
        // Called when an ad is in the process of leaving the application.
        onApplicationExit: (Ad ad) {
          print('Left application.');
        },
        // Called when a RewardedAd triggers a reward.
        onRewardedAdUserEarnedReward: (RewardedAd ad, RewardItem reward) {
          print('Reward earned: $reward');
          onAdComplete();
        },
      ),
    );

Flutter doctor

Run flutter doctor and paste the output below:

Click To Expand

``` ✓] Flutter (Channel stable, 1.22.6, on macOS 11.2.3 20D91 darwin-x64, locale en-US) • Flutter version 1.22.6 at /Users/owner/Developer/flutter/flutter • Framework revision 9b2d32b605 (3 months ago), 2021-01-22 14:36:39 -0800 • Engine revision 2f0af37152 • Dart version 2.10.5 [✓] Android toolchain - develop for Android devices (Android SDK version 30.0.2) • Android SDK at /Users/owner/Library/Android/sdk • Platform android-30, build-tools 30.0.2 • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6915495) • All Android licenses accepted. [✓] Xcode - develop for iOS and macOS (Xcode 12.4) • Xcode at /Applications/Xcode.app/Contents/Developer • Xcode 12.4, Build version 12D4e • CocoaPods version 1.10.1 [✓] Android Studio (version 4.1) • Android Studio at /Applications/Android Studio.app/Contents • Flutter plugin installed • Dart plugin version 201.9245 • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6915495) [✓] VS Code (version 1.55.1) • VS Code at /Applications/Visual Studio Code.app/Contents • Flutter extension version 3.21.0 [✓] Connected device (2 available) • Droyce Pharxiaggia Dangerfield (mobile) • 00008030-000528C83A0A802E • ios • iOS 13.3 • iPhone 11 Pro Max (mobile) • CF9B76F4-843A-44F4-8A15-A1179CA79C69 • ios • com.apple.CoreSimulator.SimRuntime.iOS-14-4 (simulator) • No issues found! ```

Flutter dependencies

Run flutter pub deps -- --style=compact and paste the output below:

Click To Expand

``` Dart SDK 2.10.5 Flutter SDK 1.22.6 voyce_re_do 1.0.0+1 dependencies: - after_layout 1.0.7+2 [flutter] - auto_size_text 2.1.0 [flutter] - basic_utils 2.7.1 [http logging json_annotation pointycastle convert crypto] - cached_network_image 2.5.1 [flutter flutter_cache_manager octo_image] - cached_video_player 1.0.3 [flutter] - cloud_firestore 0.16.0+1 [flutter meta quiver firebase_core firebase_core_platform_interface cloud_firestore_platform_interface cloud_firestore_web] - cloud_functions 0.9.0 [meta flutter firebase_core firebase_core_platform_interface cloud_functions_platform_interface cloud_functions_web] - csv 4.1.0 - cupertino_icons 0.1.3 - dots_indicator 1.2.0 [flutter] - export_video_frame 0.0.5+4 [flutter] - file_picker 2.1.7 [flutter flutter_web_plugins flutter_plugin_android_lifecycle plugin_platform_interface] - firebase_analytics 7.0.1 [meta flutter firebase_core firebase_analytics_web firebase_analytics_platform_interface] - firebase_auth 0.20.1 [meta firebase_core firebase_core_platform_interface firebase_auth_platform_interface firebase_auth_web flutter] - firebase_core 0.7.0 [firebase_core_platform_interface flutter quiver meta firebase_core_web] - firebase_storage 7.0.0 [flutter firebase_core firebase_core_platform_interface firebase_storage_web firebase_storage_platform_interface quiver] - flappy_search_bar 1.7.2 [flutter async flutter_staggered_grid_view] - flushbar 1.10.4 [flutter] - flutter 0.0.0 [characters collection meta typed_data vector_math sky_engine] - flutter_colorpicker 0.3.5 [flutter] - flutter_datetime_picker 1.5.0 [flutter] - flutter_ffmpeg 0.3.1 [flutter] - flutter_pagination_helper 1.0.1+2 [flutter cupertino_icons] - flutter_slidable 0.5.7 [flutter] - font_awesome_flutter 8.12.0 [flutter] - get 3.26.0 [flutter] - google_fonts 1.1.2 [flutter http path_provider crypto] - google_mobile_ads 0.11.0+4 [meta flutter] - google_sign_in 4.5.9 [google_sign_in_platform_interface flutter meta google_sign_in_web] - http 0.12.2 [http_parser path pedantic] - image_cropper 1.3.1 [flutter] - image_picker 0.6.7+22 [flutter flutter_plugin_android_lifecycle image_picker_platform_interface] - infinite_listview 1.0.1+1 [flutter] - intl 0.16.1 [path] - like_button 1.0.4 [flutter] - loadmore 1.0.4 [flutter] - palette_generator 0.2.3 [flutter collection path] - path_provider 1.6.28 [flutter path_provider_platform_interface path_provider_macos path_provider_linux path_provider_windows] - provider 4.3.3 [collection flutter nested] - rxdart 0.24.1 - sticky_infinite_list 1.3.0 [flutter] - swipedetector 1.2.0 [flutter] - timeago 2.0.30 - uuid 2.2.2 [crypto convert] - validators 2.0.1 [vin_decoder] - video_thumbnail 0.2.5+1 [flutter] - video_trimmer 0.3.5 [flutter file_picker video_player flutter_ffmpeg video_thumbnail path_provider intl path] - visibility_detector 0.1.5 [flutter] dev dependencies: - flutter_launcher_icons 0.7.5 [image args yaml] - flutter_test 0.0.0 [flutter test_api path fake_async clock stack_trace vector_math async boolean_selector characters charcode collection matcher meta source_span stream_channel string_scanner term_glyph typed_data] transitive dependencies: - archive 2.0.13 [crypto args path] - args 1.6.0 - async 2.5.0-nullsafety.1 [collection] - boolean_selector 2.1.0-nullsafety.1 [source_span string_scanner] - characters 1.1.0-nullsafety.3 - charcode 1.2.0-nullsafety.1 - clock 1.1.0-nullsafety.1 - cloud_firestore_platform_interface 3.0.2 [flutter meta collection firebase_core plugin_platform_interface] - cloud_firestore_web 0.3.0+2 [flutter flutter_web_plugins http_parser meta firebase_core firebase_core_web cloud_firestore_platform_interface js] - cloud_functions_platform_interface 4.0.1 [flutter meta firebase_core plugin_platform_interface] - cloud_functions_web 3.1.3 [firebase_core firebase_core_web cloud_functions_platform_interface flutter flutter_web_plugins http_parser meta js] - collection 1.15.0-nullsafety.3 - convert 2.1.1 [charcode typed_data] - crypto 2.1.5 [collection convert typed_data] - fake_async 1.2.0-nullsafety.1 [clock collection] - ffi 0.1.3 - file 5.2.1 [intl meta path] - firebase 7.3.3 [http http_parser js] - firebase_analytics_platform_interface 1.0.3 [flutter meta] - firebase_analytics_web 0.1.1 [flutter flutter_web_plugins firebase firebase_analytics_platform_interface meta] - firebase_auth_platform_interface 3.1.0 [flutter meta firebase_core plugin_platform_interface] - firebase_auth_web 0.3.3 [flutter flutter_web_plugins meta http_parser intl firebase_core firebase_core_web firebase_auth_platform_interface js] - firebase_core_platform_interface 3.0.1 [flutter meta plugin_platform_interface quiver] - firebase_core_web 0.2.1+3 [firebase_core_platform_interface flutter flutter_web_plugins meta js] - firebase_storage_platform_interface 1.0.4 [flutter meta collection firebase_core plugin_platform_interface] - firebase_storage_web 0.1.1+3 [async crypto firebase_core firebase_core_web firebase_storage_platform_interface flutter flutter_web_plugins http js meta] - flutter_blurhash 0.5.0 [flutter meta] - flutter_cache_manager 2.1.2 [flutter path_provider uuid http path sqflite pedantic clock file rxdart image] - flutter_plugin_android_lifecycle 1.0.11 [flutter] - flutter_staggered_grid_view 0.3.4 [flutter] - flutter_web_plugins 0.0.0 [flutter characters collection meta typed_data vector_math] - google_sign_in_platform_interface 1.1.2 [flutter meta quiver] - google_sign_in_web 0.9.2 [google_sign_in_platform_interface flutter flutter_web_plugins meta js] - http_parser 3.1.4 [charcode collection source_span string_scanner typed_data] - image 2.1.19 [archive xml meta] - image_picker_platform_interface 1.1.6 [flutter meta http plugin_platform_interface] - js 0.6.2 - json_annotation 3.1.1 - logging 0.11.4 - matcher 0.12.10-nullsafety.1 [stack_trace] - meta 1.3.0-nullsafety.3 - nested 0.0.4 [flutter] - octo_image 0.3.0 [flutter flutter_blurhash] - path 1.8.0-nullsafety.1 - path_provider_linux 0.0.1+2 [path xdg_directories path_provider_platform_interface flutter] - path_provider_macos 0.0.4+8 [flutter] - path_provider_platform_interface 1.0.4 [flutter meta platform plugin_platform_interface] - path_provider_windows 0.0.4+3 [path_provider_platform_interface meta path flutter ffi win32] - pedantic 1.9.2 [meta] - petitparser 3.1.0 [meta] - platform 2.2.1 - plugin_platform_interface 1.0.3 [meta] - pointycastle 2.0.1 - process 3.0.13 [file intl meta path platform] - quiver 2.1.5 [matcher meta] - random_string 2.1.0 - sky_engine 0.0.99 - source_span 1.8.0-nullsafety.2 [charcode collection path term_glyph] - sqflite 1.3.2+4 [flutter sqflite_common path] - sqflite_common 1.0.3+3 [synchronized path meta] - stack_trace 1.10.0-nullsafety.1 [path] - stream_channel 2.1.0-nullsafety.1 [async] - string_scanner 1.1.0-nullsafety.1 [charcode source_span] - synchronized 2.2.0+2 - term_glyph 1.2.0-nullsafety.1 - test_api 0.2.19-nullsafety.2 [async boolean_selector collection meta path source_span stack_trace stream_channel string_scanner term_glyph matcher] - typed_data 1.3.0-nullsafety.3 [collection] - vector_math 2.1.0-nullsafety.3 - video_player 1.0.1 [meta video_player_platform_interface video_player_web flutter] - video_player_platform_interface 2.2.0 [flutter meta] - video_player_web 0.1.4+1 [flutter flutter_web_plugins meta video_player_platform_interface] - vin_decoder 0.1.3 [meta basic_utils http random_string] - win32 1.7.4+1 [ffi] - xdg_directories 0.1.2 [meta path process] - xml 4.5.1 [collection convert meta petitparser] - yaml 2.2.1 [charcode collection string_scanner source_span] ```

googleads / googleads-mobile-flutter