Gradle version updates, remove ads, and other changes for successful compilations.

app/src/main/AndroidManifest.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     package="com.hyperling.apps.games">
 
     <!-- Include required permissions for Google Mobile Ads to run. -->
@@ -9,21 +10,17 @@
     <application
         android:allowBackup="true"
         android:icon="@drawable/icon"
+        android:roundIcon="@drawable/icon"
         android:label="@string/app_name"
         android:supportsRtl="true"
         android:theme="@style/AppTheme"
         android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize">
         <!-- android:configChanges="orientation|keyboardHidden|screenSize" -->
 
-        <!-- This meta-data tag is required to use Google Play Services. -->
-        <meta-data
-            android:name="com.google.android.gms.version"
-            android:value="@integer/google_play_services_version" />
-
-        <activity android:name="com.hyperling.apps.games.MainActivity">
+        <activity android:name="com.hyperling.apps.games.MainActivity"
+            android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
-
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>