可以尝试在广告请求时添加NativeAdOptions，设置以下属性来解决该

1. setAdChoicesPlacement(position)：设置广告选项的位置
2. setRequestMultipleImages(requestMultipleImages)：设置是否请求多个广告图片
3. setMediaAspectRatio(mediaAspectRatio)：设置广告媒体的宽高比
4. setReturnUrlsForImageAssets(returnUrlsForImageAssets)：设置是否返回广告图像的URL

示例代码：

NativeAdOptions adOptions = new NativeAdOptions.Builder() .setAdChoicesPlacement(NativeAdOptions.ADCHOICES_TOP_RIGHT) .setRequestMultipleImages(true) .setMediaAspectRatio(NativeAdOptions.NATIVE_MEDIA_ASPECT_RATIO_PORTRAIT) .setReturnUrlsForImageAssets(true) .build();

NativeAd ad = new NativeAd(this, "YOUR_PLACEMENT_ID"); ad.setAdListener(new AdListener() { @Override public void onAdLoaded() { // Ad has loaded } @Override public void onError(Ad ad, AdError error) { // Ad failed to load } }); ad.loadAd(adOptions);