android playstore claiming devices are incompatible

 <?xml version="1.0" encoding="utf-8"?>
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 <manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionName="1.0.1" android:versionCode="3" package="com.EPMD.anxietyTrainer" android:installLocation="preferExternal">
   <application android:icon="@drawable/app_icon" android:label="@string/app_name" android:debuggable="false" android:isGame="true" android:banner="@drawable/app_banner">
     <activity android:name="com.google.unity.GoogleUnityActivity" android:label="@string/app_name" android:screenOrientation="landscape" android:launchMode="singleTask" android:configChanges="mcc|mnc|locale|touchscreen|keyboard|keyboardHidden|navigation|orientation|screenLayout|uiMode|screenSize|smallestScreenSize|fontScale">
       <intent-filter>
         <action android:name="android.intent.action.MAIN" />
         <category android:name="android.intent.category.LAUNCHER" />
         <category android:name="com.google.intent.category.CARDBOARD" />
       </intent-filter>
       <meta-data android:name="unityplayer.UnityActivity" android:value="true" />
     </activity>
     <meta-data android:name="IMMERSIVE_MODE" android:value="true" />
   </application>
   <uses-sdk android:minSdkVersion="16" android:targetSdkVersion="22" />
   <uses-feature android:glEsVersion="0x00020000" />
   <uses-feature android:name="android.hardware.sensor.accelerometer" android:required="true" />
   <uses-feature android:name="android.hardware.sensor.gyroscope" />
   <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
   <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
   <uses-permission android:name="android.permission.INTERNET" />
   <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
   <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
   <uses-permission android:name="com.android.vending.CHECK_LICENSE" />
   <uses-feature android:name="android.hardware.touchscreen" android:required="false" />
   <uses-feature android:name="android.hardware.touchscreen.multitouch" android:required="false" />
   <uses-feature android:name="android.hardware.touchscreen.multitouch.distinct" android:required="false" />
 </manifest>

Even an s4 that should be more that adequate, but also a vs985 that should have all the hardware on board are not allowed to install my app because the playstore claims it is "incompatible". I have my android manifest included because i cannot for the life of me figure out why they are incompatible (does anyone know how to even check this?). I would really like know why this small manifest is excluding so many people, but i'm stumped.

The app is a simple cardboard thing where a movie is watched projected on a sphere, and a little anonymous data of the viewer's looking habits is being sent to a server.