title: Admob ad will not load. Error 2. It worked before but suddenly stopped
body: <p>Here is the entire class that I am trying to load a banner ad into (createAd() method does the work)</p>
  
  <pre><code>public class HomeActivity extends Activity {
  
      private HomeView homeView;
      private ImageView playButton;
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          requestWindowFeature(Window.FEATURE_NO_TITLE);
          getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                  WindowManager.LayoutParams.FLAG_FULLSCREEN);
  
  //        playButton = (ImageView)findViewById(R.id.playButton);
  //        playButton.setImageBitmap(BitmapFactory.decodeResource(getResources(),
  //                R.drawable.play));
  //        setListener();
          setContentView(R.layout.home_main);
          createAd();
  
      }
  
      private void setListener (){
          playButton.setOnClickListener(new View.OnClickListener() {
              @Override
              public void onClick(View view) {
                  playButton.setImageBitmap(BitmapFactory.decodeResource(getResources(),
                          R.drawable.play2));
                  playGame();
              }
          });
      }
  
      private void createAd(){
          setContentView(R.layout.home_main);
          AdView adView = (AdView)findViewById(R.id.bottomAd);
          AdRequest.Builder adRequestBuilder = new AdRequest.Builder();
          adRequestBuilder.addTestDevice("FEACCF89D31180ABDD853C9C3DD2E871");
  //                .addTestDevice("1744314CD0C7B0619F94D44CE2E5093E");
  
          adView.loadAd(adRequestBuilder.build());
      }
  
      public void playGame() {
          SharedPreferences savedData = getApplicationContext()
                  .getSharedPreferences("lastScore", Context.MODE_PRIVATE);
          int score = savedData.getInt("lastScore", Context.MODE_PRIVATE);
          Intent intent = new Intent(HomeActivity.this, GamePlay.class);
          intent.putExtra("lastScore", score);
          startActivity(intent);
          finish();
      }
  
      @Override
      public boolean onCreateOptionsMenu(Menu menu) {
          // Inflate the menu; this adds items to the action bar if it is present.
          getMenuInflater().inflate(R.menu.main, menu);
          return true;
      }
  
      @Override
      public boolean onOptionsItemSelected(MenuItem item) {
          // Handle action bar item clicks here. The action bar will
          // automatically handle clicks on the Home/Up button, so long
          // as you specify a parent activity in AndroidManifest.xml.
          int id = item.getItemId();
          if (id == R.id.action_settings) {
              return true;
          }
          return super.onOptionsItemSelected(item);
      }
  }
  </code></pre>
  
  <p>Here is the xml of home_main</p>
  
  <pre><code>&lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:tools="http://schemas.android.com/tools"
      android:id="@+id/homeRelative"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:paddingBottom="@dimen/activity_vertical_margin"
      android:paddingTop="@dimen/activity_vertical_margin"
      tools:context=".HomeActivity"&gt;
  
      &lt;com.google.android.gms.ads.AdView
          xmlns:ads="http://schemas.android.com/apk/res-auto"
          android:id="@+id/bottomAd"
          android:layout_width="fill_parent"
          android:layout_height="wrap_content"
          ads:adSize="SMART_BANNER"
          ads:adUnitId="@string/admob_banner_id"&gt;
      &lt;/com.google.android.gms.ads.AdView&gt;
  
  &lt;/RelativeLayout&gt;
  </code></pre>
  
  <p>Here is my log after the most recent run</p>
  
  <pre><code> 01-01 16:00:32.235  26387-26387/com.rune.colorhunt D/OpenGLRenderer﹕ Enabling debug mode 0
  01-01 16:00:32.275      652-796/? I/CrashAnrDetector﹕ onPackageUpdateFinished : com.rune.colorhunt
  01-01 16:00:37.351  26387-26416/com.rune.colorhunt D/dalvikvm﹕ DexOpt: --- BEGIN 'ads976472321.jar' (bootstrap=0) ---
  01-01 16:00:37.361  26387-26387/com.rune.colorhunt V/WebViewChromium﹕ Binding Chromium to the main looper Looper (main, tid 1) {41d00b38}
  01-01 16:00:37.361  26387-26387/com.rune.colorhunt I/chromium﹕ [INFO:library_loader_hooks.cc(112)] Chromium logging enabled: level = 0, default verbosity = 0
  01-01 16:00:37.361  26387-26387/com.rune.colorhunt I/BrowserProcessMain﹕ Initializing chromium process, renderers=0
  01-01 16:00:37.391  26387-26426/com.rune.colorhunt W/chromium﹕ [WARNING:proxy_service.cc(888)] PAC support disabled because there is no system implementation
  01-01 16:00:37.421  26387-26387/com.rune.colorhunt I/Ads﹕ Starting ad request.
  01-01 16:00:37.441  26387-26416/com.rune.colorhunt D/dalvikvm﹕ DexOpt: --- END 'ads976472321.jar' (success) ---
  01-01 16:00:37.441  26387-26416/com.rune.colorhunt D/dalvikvm﹕ DEX prep '/data/data/com.rune.colorhunt/cache/ads976472321.jar': unzip in 0ms, rewrite 91ms
  01-01 16:00:37.611  26387-26394/com.rune.colorhunt I/dalvikvm﹕ Total arena pages for JIT: 11
  01-01 16:00:37.611  26387-26394/com.rune.colorhunt I/dalvikvm﹕ Total arena pages for JIT: 12
  01-01 16:00:37.621  26387-26394/com.rune.colorhunt I/dalvikvm﹕ Total arena pages for JIT: 13
  01-01 16:00:37.621  26387-26394/com.rune.colorhunt I/dalvikvm﹕ Total arena pages for JIT: 14
  01-01 16:00:37.651  26387-26431/com.rune.colorhunt W/Ads﹕ There was a problem getting an ad response. ErrorCode: 2
  01-01 16:00:37.691  26387-26387/com.rune.colorhunt I/Ads﹕ Scheduling ad refresh 60000 milliseconds from now.
  01-01 16:00:37.691  26387-26387/com.rune.colorhunt W/Ads﹕ Failed to load ad: 2
  01-01 16:01:37.715  26387-26387/com.rune.colorhunt I/Ads﹕ Starting ad request.
  01-01 16:01:37.825  26387-26490/com.rune.colorhunt W/Ads﹕ There was a problem getting an ad response. ErrorCode: 2
  01-01 16:01:37.845  26387-26387/com.rune.colorhunt I/Ads﹕ Scheduling ad refresh 60000 milliseconds from now.
  01-01 16:01:37.845  26387-26387/com.rune.colorhunt W/Ads﹕ Failed to load ad: 2
  01-01 16:02:37.889  26387-26387/com.rune.colorhunt I/Ads﹕ Starting ad request.
  01-01 16:02:38.009  26387-26531/com.rune.colorhunt W/Ads﹕ There was a problem getting an ad response. ErrorCode: 2
  01-01 16:02:38.039  26387-26387/com.rune.colorhunt I/Ads﹕ Scheduling ad refresh 60000 milliseconds from now.
  01-01 16:02:38.039  26387-26387/com.rune.colorhunt W/Ads﹕ Failed to load ad: 2
  01-01 16:03:38.972  26387-26387/com.rune.colorhunt I/Ads﹕ Starting ad request.
  01-01 16:03:39.062  26387-26783/com.rune.colorhunt W/Ads﹕ There was a problem getting an ad response. ErrorCode: 2
  01-01 16:03:39.062  26387-26387/com.rune.colorhunt I/Ads﹕ Scheduling ad refresh 60000 milliseconds from now.
  01-01 16:03:39.062  26387-26387/com.rune.colorhunt W/Ads﹕ Failed to load ad: 2
  </code></pre>
  
  <p>If somebody would help me, that would be amazing. I literally have no idea what the problem could be. Perhaps im missing something very simple and just need another pair of eyes. Any help is appreciated, thanks. </p>