Unfortunately, app has stopped

Hi everyone, I need help, when I run my app in any android device this is closed.

I'm using unity 5.3.5f1 with GooglePlayGames, GoogleMobileAds, Heyzap, SDKBOX(IAP, Ratings and Reviews).

This is the logcat:

This is my Android Manifest:

Code (CSharp):

1. <?xml version="1.0" encoding="utf-8"?>
2. <manifest xmlns:android="http://schemas.android.com/apk/res/android" android:installLocation="preferExternal" android:theme="@android:style/Theme.NoTitleBar" package="com.example.unity" android:versionName="1.0" android:versionCode="1">
3.   <supports-screens android:smallScreens="true" android:normalScreens="true" android:largeScreens="true" android:xlargeScreens="true" android:anyDensity="true" />
4.   <application android:icon="@drawable/app_icon" android:label="@string/app_name" android:debuggable="true">
5.     <activity android:name="com.sdkbox.activity.CustomActivity" android:label="@string/app_name">
6.       <meta-data android:name="unityplayer.UnityActivity" android:value="true" />
7.     </activity>
8.     <activity android:name="com.unity3d.player.UnityPlayerProxyActivity" android:launchMode="singleTask" android:label="@string/app_name" android:configChanges="fontScale|keyboard|keyboardHidden|locale|mnc|mcc|navigation|orientation|screenLayout|screenSize|smallestScreenSize|uiMode|touchscreen" android:screenOrientation="portrait">
9.     </activity>
10.     <activity android:name="com.unity3d.player.UnityPlayerActivity" android:launchMode="singleTask" android:label="@string/app_name" android:configChanges="fontScale|keyboard|keyboardHidden|locale|mnc|mcc|navigation|orientation|screenLayout|screenSize|smallestScreenSize|uiMode|touchscreen" android:screenOrientation="portrait">
11.     </activity>
12.     <activity android:name="com.unity3d.player.UnityPlayerNativeActivity" android:launchMode="singleTask" android:label="@string/app_name" android:configChanges="fontScale|keyboard|keyboardHidden|locale|mnc|mcc|navigation|orientation|screenLayout|screenSize|smallestScreenSize|uiMode|touchscreen" android:screenOrientation="portrait">
13.       <intent-filter>
14.         <action android:name="android.intent.action.MAIN" />
15.         <category android:name="android.intent.category.LAUNCHER" />
16.       </intent-filter>
17.       <meta-data android:name="android.app.lib_name" android:value="unity" />
18.       <meta-data android:name="unityplayer.ForwardNativeEventsToDalvik" android:value="true" />
19.     </activity>
20.     <activity android:name="com.unity3d.player.UnityPlayerProxyActivity" android:launchMode="singleTask" android:label="@string/app_name" android:configChanges="fontScale|keyboard|keyboardHidden|locale|mnc|mcc|navigation|orientation|screenLayout|screenSize|smallestScreenSize|uiMode|touchscreen" android:screenOrientation="landscape">
21.       <meta-data android:name="unityplayer.ForwardNativeEventsToDalvik" android:value="true" />
22.     </activity>
23.   </application>
24.   <uses-feature android:glEsVersion="0x00020000" />
25.   <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
26.   <uses-permission android:name="android.permission.INTERNET" />
27.   <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
28.   <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
29.   <uses-permission android:name="com.android.vending.BILLING" />
30.   <uses-feature android:name="android.hardware.touchscreen" />
31.   <uses-feature android:name="android.hardware.touchscreen.multitouch" android:required="false" />
32.   <uses-feature android:name="android.hardware.touchscreen.multitouch.distinct" android:required="false" />
33.   <uses-sdk android:minSdkVersion="11" android:targetSdkVersion="23" />
34. </manifest>