Admob is not displaying ads for my app.Test ads are displaying but real ads are not. 

This error should be shown if my account is disabled. But I'm able to log into my admob account.

I also tested it on other phones with different accounts also with different connectivity but still no use. 

here is the log

```
W/Ads: Received error HTTP response code: 403
 /myapp.test W/Ads: There was a problem getting an ad response. ErrorCode: 0
 /myapp.test W/Ads: Failed to load ad: 0

```

---Later added---

Here is the layout file

```
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_marginLeft="15dp"
    android:layout_marginRight="15dp"
    android:orientation="vertical"
    app:behavior_overlapTop="64dp"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    app:theme="@style/AppTheme"
    tools:showIn="@layout/activity_main">

    <android.support.v4.widget.NestedScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical">

            <android.support.v7.widget.CardView
                android:id="@+id/baseView"
                android:layout_width="match_parent"
                android:layout_height="280dp"
                android:padding="10dp">

            </android.support.v7.widget.CardView>
            <RelativeLayout
                android:layout_marginTop="30dp"
                android:layout_width="match_parent"
                android:layout_height="wrap_content">
            <com.google.android.gms.ads.AdView xmlns:ads="http://schemas.android.com/apk/res-auto"
                android:id="@+id/adView"
                android:layout_centerHorizontal="true"
                android:layout_width="320dp"
                android:layout_height="50dp"
                ads:adSize="BANNER"
                ads:adUnitId="@string/admain" />
            </RelativeLayout>
        </LinearLayout>
    </android.support.v4.widget.NestedScrollView>

</LinearLayout>

```

This is how I called ads in the main activity

```
MobileAds.initialize(getApplicationContext(), getString(R.string.appid));
mAdView = (AdView) findViewById(R.id.adView);
AdRequest adRequest = new AdRequest.Builder().addTestDevice(getResources().getString(R.string.test)).build();
mAdView.loadAd(adRequest);

```

This is gradle

```
    compile 'com.google.firebase:firebase-ads:10.0.1'

}
apply plugin: 'com.google.gms.google-services'

```

---Later added---

Once ads were displaying. Later my account get blocked.After a month its now active. The apps I made prior to the blocking isn't showing ads. But new apps are showing ads without any issue.. 

I think the only possible solution is to change the package-name to a different one. It worked for me!