diff --git a/Example/PrebidDemoKotlin/src/main/java/org/prebid/mobile/prebidkotlindemo/activities/ads/inapp/InAppNativeActivity.kt b/Example/PrebidDemoKotlin/src/main/java/org/prebid/mobile/prebidkotlindemo/activities/ads/inapp/InAppNativeActivity.kt
index 9c69ee87d..7fe923207 100644
--- a/Example/PrebidDemoKotlin/src/main/java/org/prebid/mobile/prebidkotlindemo/activities/ads/inapp/InAppNativeActivity.kt
+++ b/Example/PrebidDemoKotlin/src/main/java/org/prebid/mobile/prebidkotlindemo/activities/ads/inapp/InAppNativeActivity.kt
@@ -134,16 +134,11 @@ class InAppNativeActivity : BaseAdActivity() {
 
         adWrapperView.addView(nativeContainer)
 
-        ad.registerViewList(
+        ad.registerView(
             adWrapperView,
             listOf(icon, title, image, description, cta),
-            object : PrebidNativeAdEventListener {
-                override fun onAdClicked() {}
-
-                override fun onAdImpression() {}
-
-                override fun onAdExpired() {}
-            })
+            null
+        )
     }
 
     override fun onDestroy() {
diff --git a/Example/PrebidInternalTestApp/src/main/java/org/prebid/mobile/renderingtestapp/plugplay/bidding/ppm/PpmNativeFragment.kt b/Example/PrebidInternalTestApp/src/main/java/org/prebid/mobile/renderingtestapp/plugplay/bidding/ppm/PpmNativeFragment.kt
index aa0236f2c..36fc83a78 100644
--- a/Example/PrebidInternalTestApp/src/main/java/org/prebid/mobile/renderingtestapp/plugplay/bidding/ppm/PpmNativeFragment.kt
+++ b/Example/PrebidInternalTestApp/src/main/java/org/prebid/mobile/renderingtestapp/plugplay/bidding/ppm/PpmNativeFragment.kt
@@ -20,11 +20,6 @@ import android.os.Bundle
 import android.os.Handler
 import android.os.Looper
 import android.view.View
-import android.widget.Button
-import android.widget.ImageView
-import android.widget.TextView
-import androidx.annotation.IdRes
-import androidx.constraintlayout.widget.ConstraintLayout
 import org.prebid.mobile.PrebidNativeAd
 import org.prebid.mobile.PrebidNativeAdEventListener
 import org.prebid.mobile.api.data.FetchDemandResult
@@ -36,7 +31,6 @@ import org.prebid.mobile.renderingtestapp.databinding.FragmentNativeBinding
 import org.prebid.mobile.renderingtestapp.plugplay.config.AdConfiguratorDialogFragment
 import org.prebid.mobile.renderingtestapp.utils.BaseEvents
 import org.prebid.mobile.renderingtestapp.utils.loadImage
-import org.prebid.mobile.renderingtestapp.widgets.EventCounterView
 
 open class PpmNativeFragment : AdFragment() {
 
@@ -57,7 +51,7 @@ open class PpmNativeFragment : AdFragment() {
         if (layoutRes == R.layout.fragment_native) {
             layoutInflater.inflate(
                 getEventButtonViewId(),
-                binding.contentFragmentNative!!,
+                binding.contentFragmentNative,
                 true
             )
         }
@@ -100,7 +94,7 @@ open class PpmNativeFragment : AdFragment() {
     protected open fun getEventButtonViewId(): Int = R.layout.lyt_native_in_app_events
 
     protected open fun inflateViewContent(nativeAd: PrebidNativeAd) {
-        nativeAd.registerViewList(
+        nativeAd.registerView(
             binding.adContainer,
             listOf(
                 binding.tvNativeTitle,
@@ -110,7 +104,7 @@ open class PpmNativeFragment : AdFragment() {
                 binding.ivNativeMain,
                 binding.ivNativeIcon
             ),
-            createNativeListener()
+            NativeListener(events)
         )
 
         binding.tvNativeTitle.text = nativeAd.title
@@ -126,27 +120,22 @@ open class PpmNativeFragment : AdFragment() {
         }
     }
 
-    protected fun createNativeListener(): PrebidNativeAdEventListener {
-        return object : PrebidNativeAdEventListener {
-            override fun onAdClicked() {
-                events.clicked(true)
-            }
+    protected class NativeListener(private val events: Events) : PrebidNativeAdEventListener {
 
-            override fun onAdImpression() {
-                doInMainThread {
-                    events.impression(true)
-                }
-            }
+        override fun onAdClicked() {
+            events.clicked(true)
+        }
 
-            override fun onAdExpired() {
-                events.expired(true)
+        override fun onAdImpression() {
+            Handler(Looper.getMainLooper()).post {
+                events.impression(true)
             }
         }
-    }
 
-    private fun doInMainThread(function: () -> Unit) {
-        val handler = Handler(Looper.getMainLooper())
-        handler.postAtFrontOfQueue(function)
+        override fun onAdExpired() {
+            events.expired(true)
+        }
+
     }
 
     protected class Events(parentView: View) : BaseEvents(parentView) {
diff --git a/Example/PrebidInternalTestApp/src/main/java/org/prebid/mobile/renderingtestapp/plugplay/bidding/ppm/PpmNativeLinksFragment.kt b/Example/PrebidInternalTestApp/src/main/java/org/prebid/mobile/renderingtestapp/plugplay/bidding/ppm/PpmNativeLinksFragment.kt
index fb771db61..fec5512b1 100644
--- a/Example/PrebidInternalTestApp/src/main/java/org/prebid/mobile/renderingtestapp/plugplay/bidding/ppm/PpmNativeLinksFragment.kt
+++ b/Example/PrebidInternalTestApp/src/main/java/org/prebid/mobile/renderingtestapp/plugplay/bidding/ppm/PpmNativeLinksFragment.kt
@@ -39,7 +39,7 @@ class PpmNativeLinksFragment : PpmNativeFragment() {
                 findView(R.id.btnNativeDeeplinkFallback),
                 findView(R.id.btnNativeLinkUrl)
             ),
-            createNativeListener()
+            NativeListener(events)
         )
 
         findView<Button>(R.id.btnNativeLinkRoot).text = nativeAd.callToAction
diff --git a/Example/PrebidInternalTestApp/src/main/java/org/prebid/mobile/renderingtestapp/utils/BaseEvents.kt b/Example/PrebidInternalTestApp/src/main/java/org/prebid/mobile/renderingtestapp/utils/BaseEvents.kt
index 18b1082bc..4ceff16a7 100644
--- a/Example/PrebidInternalTestApp/src/main/java/org/prebid/mobile/renderingtestapp/utils/BaseEvents.kt
+++ b/Example/PrebidInternalTestApp/src/main/java/org/prebid/mobile/renderingtestapp/utils/BaseEvents.kt
@@ -3,11 +3,15 @@ package org.prebid.mobile.renderingtestapp.utils
 import android.view.View
 import androidx.annotation.IdRes
 import org.prebid.mobile.renderingtestapp.widgets.EventCounterView
+import java.lang.ref.WeakReference
 
-abstract class BaseEvents(private val parentView: View) {
+abstract class BaseEvents(parentView: View) {
+
+    private val parentViewReference = WeakReference(parentView)
 
     protected fun enable(@IdRes idRes: Int, value: Boolean) {
-        val event = parentView.findViewById<EventCounterView>(idRes)
+        val view = parentViewReference.get() ?: return
+        val event = view.findViewById<EventCounterView>(idRes)
         event?.isEnabled = value
     }
 
diff --git a/PrebidMobile/PrebidMobile-core/src/main/java/org/prebid/mobile/CacheManager.java b/PrebidMobile/PrebidMobile-core/src/main/java/org/prebid/mobile/CacheManager.java
index 97fe01f2e..5eb3f83f7 100644
--- a/PrebidMobile/PrebidMobile-core/src/main/java/org/prebid/mobile/CacheManager.java
+++ b/PrebidMobile/PrebidMobile-core/src/main/java/org/prebid/mobile/CacheManager.java
@@ -20,6 +20,7 @@
 import android.os.Looper;
 import android.text.TextUtils;
 
+import androidx.annotation.Nullable;
 import androidx.annotation.VisibleForTesting;
 
 import java.util.HashMap;
@@ -63,6 +64,10 @@ public static void clear() {
         expiryIntervalMap.clear();
     }
 
+    /**
+     * Return cached ad content by cache id.
+     */
+    @Nullable
     protected static String get(String cacheId) {
         return savedValues.remove(cacheId);
     }
diff --git a/PrebidMobile/PrebidMobile-core/src/main/java/org/prebid/mobile/ClickTracker.java b/PrebidMobile/PrebidMobile-core/src/main/java/org/prebid/mobile/ClickTracker.java
index a8f679c7e..4f583cf25 100644
--- a/PrebidMobile/PrebidMobile-core/src/main/java/org/prebid/mobile/ClickTracker.java
+++ b/PrebidMobile/PrebidMobile-core/src/main/java/org/prebid/mobile/ClickTracker.java
@@ -36,7 +36,7 @@ static ClickTracker createAndFire(String url, Context context, ClickTrackerListe
 
     private ClickTracker(String url, Context context, ClickTrackerListener clickTrackerListener) {
         this.url = url;
-        this.context = context;
+        this.context = context.getApplicationContext();
         this.clickTrackerListener = clickTrackerListener;
     }
 
diff --git a/PrebidMobile/PrebidMobile-core/src/main/java/org/prebid/mobile/ImpressionTracker.java b/PrebidMobile/PrebidMobile-core/src/main/java/org/prebid/mobile/ImpressionTracker.java
index e2122d2f0..c4bf4869a 100644
--- a/PrebidMobile/PrebidMobile-core/src/main/java/org/prebid/mobile/ImpressionTracker.java
+++ b/PrebidMobile/PrebidMobile-core/src/main/java/org/prebid/mobile/ImpressionTracker.java
@@ -44,7 +44,7 @@ private ImpressionTracker(String url, VisibilityDetector visibilityDetector, Con
         this.url = url;
         this.visibilityDetector = visibilityDetector;
         this.listener = new ImpressionListener();
-        this.context = context;
+        this.context = context.getApplicationContext();
         this.impressionTrackerListener = impressionTrackerListener;
     }
 
diff --git a/PrebidMobile/PrebidMobile-core/src/main/java/org/prebid/mobile/PrebidNativeAd.java b/PrebidMobile/PrebidMobile-core/src/main/java/org/prebid/mobile/PrebidNativeAd.java
index 54daa3562..04da70fc8 100644
--- a/PrebidMobile/PrebidMobile-core/src/main/java/org/prebid/mobile/PrebidNativeAd.java
+++ b/PrebidMobile/PrebidMobile-core/src/main/java/org/prebid/mobile/PrebidNativeAd.java
@@ -21,6 +21,7 @@
 import android.content.Intent;
 import android.net.Uri;
 import android.text.TextUtils;
+import android.util.Log;
 import android.view.View;
 
 import androidx.annotation.NonNull;
@@ -32,6 +33,7 @@
 import org.prebid.mobile.rendering.bidding.events.EventsNotifier;
 import org.prebid.mobile.rendering.utils.helpers.ExternalViewerUtils;
 
+import java.lang.ref.WeakReference;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -40,7 +42,6 @@ public class PrebidNativeAd {
     private static final String TAG = "PrebidNativeAd";
 
     private boolean impressionIsNotNotified = true;
-    private boolean clickIsNotNotified = true;
 
     private final ArrayList<NativeTitle> titles = new ArrayList<>();
     private final ArrayList<NativeImage> images = new ArrayList<>();
@@ -52,7 +53,7 @@ public class PrebidNativeAd {
     private ArrayList<String> click_trackers;
     private VisibilityDetector visibilityDetector;
     private boolean expired;
-    private View registeredView;
+    private WeakReference<View> registeredView;
     private PrebidNativeAdEventListener listener;
     private ArrayList<ImpressionTracker> impressionTrackers;
     private ArrayList<ClickTracker> clickTrackers;
@@ -69,24 +70,7 @@ public static PrebidNativeAd create(String cacheId) {
                 JSONObject adm = new JSONObject(admStr);
                 JSONArray asset = adm.getJSONArray("assets");
                 final PrebidNativeAd ad = new PrebidNativeAd();
-                CacheManager.registerCacheExpiryListener(cacheId, new CacheManager.CacheExpiryListener() {
-                    @Override
-                    public void onCacheExpired() {
-                        if (ad.registeredView == null) {
-                            if (ad.listener != null) {
-                                ad.listener.onAdExpired();
-                            }
-                            ad.expired = true;
-                            if (ad.visibilityDetector != null) {
-                                ad.visibilityDetector.destroy();
-                                ad.visibilityDetector = null;
-                            }
-                            ad.impressionTrackers = null;
-                            ad.clickTrackers = null;
-                            ad.listener = null;
-                        }
-                    }
-                });
+                CacheManager.registerCacheExpiryListener(cacheId, new CacheExpireListenerImpl(ad));
                 for (int i = 0; i < asset.length(); i++) {
                     JSONObject adObject = asset.getJSONObject(i);
                     if (adObject.has("title")) {
@@ -300,11 +284,9 @@ public String getSponsoredBy() {
     }
 
     /**
-     * This API is used to register the view for Ad Events (#onAdClicked(), #onAdImpression, #onAdExpired)
-     *
-     * @param view
-     * @param listener
+     * @deprecated use {@link PrebidNativeAd#registerView(View, List, PrebidNativeAdEventListener)}
      */
+    @Deprecated
     public boolean registerView(View view, final PrebidNativeAdEventListener listener) {
         if (!expired && view != null) {
             this.listener = listener;
@@ -314,7 +296,7 @@ public boolean registerView(View view, final PrebidNativeAdEventListener listene
             }
 
             if (imp_trackers != null) {
-                impressionTrackers = new ArrayList<ImpressionTracker>(imp_trackers.size());
+                impressionTrackers = new ArrayList<>(imp_trackers.size());
                 for (String url : imp_trackers) {
                     ImpressionTracker impressionTracker = ImpressionTracker.create(url, visibilityDetector, view.getContext(), new ImpressionTrackerListener() {
                         @Override
@@ -329,28 +311,31 @@ public void onImpressionTrackerFired() {
                 }
             }
 
-            this.registeredView = view;
+            registeredView = new WeakReference<>(view);
 
-            view.setOnClickListener(new View.OnClickListener() {
-                @Override
-                public void onClick(View v) {
-                    handleClick(v, listener);
-                }
-            });
+            view.setOnClickListener(v -> handleClick(v, listener));
             return true;
         }
         return false;
     }
 
     /**
-     * This API is used to register a list of views for Ad Events (#onAdClicked(), #onAdImpression, #onAdExpired)
-     *
-     * @param container
-     * @param viewList
-     * @param listener
+     * @deprecated use {@link PrebidNativeAd#registerView(View, List, PrebidNativeAdEventListener)}
      */
+    @Deprecated
     public boolean registerViewList(View container, List<View> viewList, final PrebidNativeAdEventListener listener) {
-        if (container == null || viewList == null || viewList.isEmpty()) {
+        return registerView(container, viewList, listener);
+    }
+
+    /**
+     * This API is used to register the view for Ad Events (#onAdClicked(), #onAdImpression, #onAdExpired).
+     *
+     * @param container      the native ad container used to track impression
+     * @param clickableViews list of views that should handle click
+     * @return true if views registered successfully
+     */
+    public boolean registerView(View container, List<View> clickableViews, final PrebidNativeAdEventListener listener) {
+        if (container == null || clickableViews == null || clickableViews.isEmpty()) {
             return false;
         }
         if (!expired && container != null) {
@@ -361,7 +346,7 @@ public boolean registerViewList(View container, List<View> viewList, final Prebi
             }
 
             if (imp_trackers != null) {
-                impressionTrackers = new ArrayList<ImpressionTracker>(imp_trackers.size());
+                impressionTrackers = new ArrayList<>(imp_trackers.size());
                 for (String url : imp_trackers) {
                     ImpressionTracker impressionTracker = ImpressionTracker.create(url, visibilityDetector, container.getContext(), new ImpressionTrackerListener() {
                         @Override
@@ -376,24 +361,14 @@ public void onImpressionTrackerFired() {
                 }
             }
 
-            this.registeredView = container;
+            registeredView = new WeakReference<>(container);
 
-            container.setOnClickListener(new View.OnClickListener() {
-                @Override
-                public void onClick(View v) {
-                    handleClick(v, listener);
-                }
-            });
+            container.setOnClickListener(v -> handleClick(v, listener));
 
-            if (viewList != null && viewList.size() > 0) {
-                for (View views : viewList) {
+            if (clickableViews != null && clickableViews.size() > 0) {
+                for (View views : clickableViews) {
                     if (views != null) {
-                        views.setOnClickListener(new View.OnClickListener() {
-                            @Override
-                            public void onClick(View v) {
-                                handleClick(v, listener);
-                            }
-                        });
+                        views.setOnClickListener(v -> handleClick(v, listener));
                     }
                 }
             }
@@ -461,4 +436,36 @@ private void fireClickTrackers(Context context) {
         }
     }
 
+    static class CacheExpireListenerImpl implements CacheManager.CacheExpiryListener {
+
+        private PrebidNativeAd ad;
+
+        public CacheExpireListenerImpl(PrebidNativeAd ad) {
+            this.ad = ad;
+        }
+
+        @Override
+        public void onCacheExpired() {
+            Log.e(TAG, "onCacheExpired");
+            WeakReference<View> weakReference = ad.registeredView;
+            if (weakReference == null) return;
+
+            View view = weakReference.get();
+            if (view != null) return;
+
+            if (ad.listener != null) {
+                ad.listener.onAdExpired();
+            }
+            ad.expired = true;
+            if (ad.visibilityDetector != null) {
+                ad.visibilityDetector.destroy();
+                ad.visibilityDetector = null;
+            }
+            ad.impressionTrackers = null;
+            ad.clickTrackers = null;
+            ad.listener = null;
+        }
+
+    }
+
 }
diff --git a/PrebidMobile/PrebidMobile-core/src/main/java/org/prebid/mobile/VisibilityDetector.java b/PrebidMobile/PrebidMobile-core/src/main/java/org/prebid/mobile/VisibilityDetector.java
index e6f529145..6cbde1c2a 100644
--- a/PrebidMobile/PrebidMobile-core/src/main/java/org/prebid/mobile/VisibilityDetector.java
+++ b/PrebidMobile/PrebidMobile-core/src/main/java/org/prebid/mobile/VisibilityDetector.java
@@ -17,8 +17,11 @@
 package org.prebid.mobile;
 
 import android.graphics.Rect;
+import android.os.Handler;
+import android.os.Looper;
 import android.view.View;
 
+import java.lang.ref.WeakReference;
 import java.util.ArrayList;
 import java.util.concurrent.Executors;
 import java.util.concurrent.ScheduledExecutorService;
@@ -27,7 +30,7 @@
 class VisibilityDetector {
     static final long VISIBILITY_THROTTLE_MILLIS = 250;
     private boolean scheduled = false;
-    private View view; // not null
+    private WeakReference<View> viewReference;
     private ArrayList<VisibilityListener> listeners;
     private Runnable visibilityCheck;
     private ScheduledExecutorService tasker;
@@ -45,7 +48,7 @@ static VisibilityDetector create(View view) {
     }
 
     private VisibilityDetector(View view) {
-        this.view = view;
+        this.viewReference = new WeakReference<>(view);
         this.listeners = new ArrayList<VisibilityListener>();
         scheduleVisibilityCheck();
     }
@@ -85,15 +88,23 @@ public void run() {
             }
         };
         tasker = Executors.newSingleThreadScheduledExecutor();
-        tasker.scheduleAtFixedRate(new Runnable() {
-            @Override
-            public void run() {
-                view.post(visibilityCheck);
+        tasker.scheduleAtFixedRate(() -> {
+            View view = viewReference.get();
+            if (view == null) {
+                // Run last visibility check
+                new Handler(Looper.getMainLooper()).post(visibilityCheck);
+
+                tasker.shutdownNow();
+                return;
             }
+
+            view.post(visibilityCheck);
+
         }, 0, VISIBILITY_THROTTLE_MILLIS, TimeUnit.MILLISECONDS);
     }
 
     boolean isVisible() {
+        View view = viewReference.get();
         if (view == null || view.getVisibility() != View.VISIBLE || view.getParent() == null) {
             return false;
         }
@@ -115,11 +126,13 @@ boolean isVisible() {
     }
 
     void destroy() {
-        if (tasker != null) {
+        if (tasker != null && !tasker.isTerminated()) {
             tasker.shutdownNow();
         }
-        view.removeCallbacks(visibilityCheck);
-        view = null;
+        View view = viewReference.get();
+        if (view != null) {
+            view.removeCallbacks(visibilityCheck);
+        }
         listeners = null;
     }