diff --git a/unity-ads/src/main/java/com/unity3d/services/ads/operation/load/LoadModuleDecoratorTimeout.java b/unity-ads/src/main/java/com/unity3d/services/ads/operation/load/LoadModuleDecoratorTimeout.java
index fef73fa1..24912264 100644
--- a/unity-ads/src/main/java/com/unity3d/services/ads/operation/load/LoadModuleDecoratorTimeout.java
+++ b/unity-ads/src/main/java/com/unity3d/services/ads/operation/load/LoadModuleDecoratorTimeout.java
@@ -4,6 +4,7 @@
 
 import com.unity3d.ads.UnityAds;
 import com.unity3d.services.core.configuration.ConfigurationReader;
+import com.unity3d.services.core.misc.Utilities;
 import com.unity3d.services.core.request.metrics.AdOperationError;
 import com.unity3d.services.core.request.metrics.AdOperationMetric;
 import com.unity3d.services.core.timer.BaseTimer;
@@ -44,7 +45,7 @@ public void onTimerFinished() {
 			});
 			loadOperationState.timeoutTimer.start(Executors.newSingleThreadScheduledExecutor());
 		} else {
-			_executorService.submit(new Runnable() {
+			_executorService.execute(new Runnable() {
 				@Override
 				public void run() {
 					if (!loadOperationState.timeoutCV.block(loadOperationState.configuration.getLoadTimeout())) {
@@ -87,7 +88,12 @@ private void onOperationTimeout(final LoadOperationState state) {
 		if (state != null) {
 			getMetricSender().sendMetricWithInitState(AdOperationMetric.newAdLoadFailure(AdOperationError.timeout, state.duration()));
 			remove(state.id);
-			state.onUnityAdsFailedToLoad(UnityAds.UnityAdsLoadError.TIMEOUT, errorMsgTimeoutLoading + state.placementId);
+			Utilities.runOnUiThread(new Runnable() {
+				@Override
+				public void run() {
+					state.onUnityAdsFailedToLoad(UnityAds.UnityAdsLoadError.TIMEOUT, errorMsgTimeoutLoading + state.placementId);
+				}
+			});
 		}
 	}
 }
diff --git a/unity-ads/src/main/java/com/unity3d/services/ads/operation/show/ShowModuleDecoratorTimeout.java b/unity-ads/src/main/java/com/unity3d/services/ads/operation/show/ShowModuleDecoratorTimeout.java
index 6376c103..aefc964b 100644
--- a/unity-ads/src/main/java/com/unity3d/services/ads/operation/show/ShowModuleDecoratorTimeout.java
+++ b/unity-ads/src/main/java/com/unity3d/services/ads/operation/show/ShowModuleDecoratorTimeout.java
@@ -4,6 +4,7 @@
 
 import com.unity3d.ads.UnityAds;
 import com.unity3d.services.core.configuration.ConfigurationReader;
+import com.unity3d.services.core.misc.Utilities;
 import com.unity3d.services.core.request.metrics.AdOperationError;
 import com.unity3d.services.core.request.metrics.AdOperationMetric;
 import com.unity3d.services.core.timer.BaseTimer;
@@ -44,7 +45,7 @@ public void onTimerFinished() {
 			});
 			showOperationState.timeoutTimer.start(Executors.newSingleThreadScheduledExecutor());
 		} else {
-			_executorService.submit(new Runnable() {
+			_executorService.execute(new Runnable() {
 				@Override
 				public void run() {
 					if (!showOperationState.timeoutCV.block(showOperationState.configuration.getShowTimeout())) {
@@ -89,11 +90,16 @@ private void releaseOperationTimeoutLock(String operationId) {
 		}
 	}
 
-	private void onOperationTimeout(final ShowOperationState state, UnityAds.UnityAdsShowError error, String message) {
+	private void onOperationTimeout(final ShowOperationState state, final UnityAds.UnityAdsShowError error,final String message) {
 		if (state != null) {
 			getMetricSender().sendMetricWithInitState(AdOperationMetric.newAdShowFailure(AdOperationError.timeout, state.duration()));
 			remove(state.id);
-			state.onUnityAdsShowFailure(error, message);
+			Utilities.runOnUiThread(new Runnable() {
+				@Override
+				public void run() {
+					state.onUnityAdsShowFailure(error, message);
+				}
+			});
 		}
 	}
 }
diff --git a/unity-ads/src/main/java/com/unity3d/services/core/request/metrics/MetricSender.java b/unity-ads/src/main/java/com/unity3d/services/core/request/metrics/MetricSender.java
index 7650f27c..5c37956e 100644
--- a/unity-ads/src/main/java/com/unity3d/services/core/request/metrics/MetricSender.java
+++ b/unity-ads/src/main/java/com/unity3d/services/core/request/metrics/MetricSender.java
@@ -76,7 +76,7 @@ public void sendMetrics(final List<Metric> metrics) {
 			return;
 		}
 
-		_executorService.submit(new Runnable() {
+		_executorService.execute(new Runnable() {
 			@Override
 			public void run() {
 				try {
diff --git a/unity-ads/src/main/java/com/unity3d/services/core/webview/bridge/invocation/WebViewBridgeInvocation.java b/unity-ads/src/main/java/com/unity3d/services/core/webview/bridge/invocation/WebViewBridgeInvocation.java
index b43f00f3..fa677a89 100644
--- a/unity-ads/src/main/java/com/unity3d/services/core/webview/bridge/invocation/WebViewBridgeInvocation.java
+++ b/unity-ads/src/main/java/com/unity3d/services/core/webview/bridge/invocation/WebViewBridgeInvocation.java
@@ -23,7 +23,7 @@ public WebViewBridgeInvocation(ExecutorService _executorService, IWebViewBridgeI
 
 	@Override
 	public synchronized void invoke(final String className, final String methodName, final int timeoutLengthInMilliSeconds, final Object... invocationParameters) {
-		_executorService.submit(
+		_executorService.execute(
 			new WebViewBridgeInvocationRunnable(invocationCallback, _webViewBridgeInvoker, className, methodName, timeoutLengthInMilliSeconds, invocationParameters));
 	}
 }