Permissions added to Android Manifest, but Google Play not registering the change?

My android manifest is correctly located in assets/plugins/android. I've added the Billing permission to the Android Manifest (attached below), but when I attempt to add some In-App Purchases to the game on the Dev Console it still gives me the message to 'upload a new APK with the BILLING permissions added'.

When I upload a new APK it even shows me the changes screen, confirming that the billing permission has been added, though the IAP screen never changes to account for this. The only thing I can think of is that I haven't yet filled in the store listing, which I'm literally doing now. Below is attached a copy of the Android Manifest.

Any help would be greatly appreciated, cheers guys :)

 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.PlayMe247.Conkers" android:versionName="0.9" android:versionCode="1" android:installLocation="preferExternal">
   <supports-screens android:smallScreens="true" android:normalScreens="true" android:largeScreens="true" android:xlargeScreens="true" android:anyDensity="true" />
   <application android:theme="@style/UnityThemeSelector" 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.unity3d.player.UnityPlayerActivity" 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" />
       </intent-filter>
       <meta-data android:name="unityplayer.UnityActivity" android:value="true" />
     </activity>
   </application>
   <uses-sdk android:minSdkVersion="9" android:targetSdkVersion="23" />
   <uses-feature android:glEsVersion="0x00020000" />
   <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" />
   <uses-permission android:name="android.permission.BILLING"></uses-permission>
   <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission>
   <uses-permission android:name="android.permission.INTERNET"></uses-permission>
 </manifest>