There is a questions related to the Google Ad representation and ads sizes

The problem is - is there a way to retrieve the ad with size of 728*90 and set it to my view which is 600*90?

The problem is that the Ad is truncated in the portrait mode while in the landscape it looks good.

Portrait:

Landscape:

I use tablet and in order to represent the Ad I use AdManagerAdView.

I found out where the problem is - the problem is that the app requests the ad with the size of (w:) 728 * (h:) 90, however, the width of the tablet is 600dp, so it is obvious that 128dp is kind of out of the screen.

I tried to check all possible ad sizes described here - https://developers.google.com/ad-manager/mobile-ads-sdk/android/banner#banner_sizes

these sizes:

            this.setAdSizes(AdSize(320, 50)) +             this.setAdSizes(AdSize(320, 100))             this.setAdSizes(AdSize(300, 250)) +             this.setAdSizes(AdSize(468, 60))             this.setAdSizes(AdSize(728, 90)) + 

However, I wasn't able to retrieve all the ads by thier sizes, I only got these:

            this.setAdSizes(AdSize(320, 50)) +             this.setAdSizes(AdSize(300, 250)) +             this.setAdSizes(AdSize(728, 90)) + 

From this point I made a conclusion that a publisher provides only these specific ads sizes. For me it means that if it is nessasary to use smaler ad that 728*90 the next size would be 300*250 which is more than twice narrowed than I need (600dp).

So the next idea was to use NativeAd (https://developers.google.com/ad-manager/mobile-ads-sdk/android/native/start), however, I get an error:

onAdFailedToLoad: {                    "Code": 3,                    "Message": "No ad config.",                    "Domain": "com.google.android.gms.ads",                    "Cause": "null",                    "Response Info": {                      "Response ID": "null",                      "Mediation Adapter Class Name": "",                      "Adapter Responses": []                    }                  } 

So as far as I undestand there is no way just to start to use NativeAd, it should be configurated on the publisher end first (as far as I see), because once I tried to made a request with the same credentials (as for AdManagerAdView), I get this config error, looks like NativeAd config is not existing on the publisher end.

So, finally the question is - is there a way to retrieve the ad with size of 728*90 and set it to my view which is 600*90?