Admob中介原生高级广告无法投放Facebook受众网络广告

Question

仅显示admob广告。等待2天。 我将FAN设置为优先级，但没有任何Facebook受众网络广告请求。是否需要其他代码来处理原生广告？

private void loadNativeAds() {
    mNativeAds = new ArrayList<>();
    AdLoader.Builder builder = new AdLoader.Builder(MainActivity.this, getString(R.string.ad_unit_id));
    adLoader = builder.forUnifiedNativeAd(
            new UnifiedNativeAd.OnUnifiedNativeAdLoadedListener() {
                @Override
                public void onUnifiedNativeAdLoaded(UnifiedNativeAd unifiedNativeAd) {
                    // A native ad loaded successfully, check if the ad loader has finished loading
                    // and if so, insert the ads into the list.
                    mNativeAds.add(unifiedNativeAd);
                    if (!adLoader.isLoading()) {
                        insertAdsInMenuItems();
                    }
                }
            }).withAdListener(
            new AdListener() {
                @Override
                public void onAdFailedToLoad(int errorCode) {
                    // A native ad failed to load, check if the ad loader has finished loading
                    // and if so, insert the ads into the list.
                    if (!adLoader.isLoading()) {
                        insertAdsInMenuItems();
                    }
                }
            }).build();

    // Load the Native ads.
    adLoader.loadAds(new AdRequest.Builder().build(), NUMBER_OF_ADS);
}