Use the gradle settings which got Infinite Timer building correctly to see if it also works for this project.

app/build.gradle

@@ -1,19 +1,18 @@
 apply plugin: 'com.android.application'
 
 android {
+    namespace "com.hyperling.carbupbeta"
     compileSdkVersion 36
-    buildToolsVersion "23.0.2"
-
     defaultConfig {
         applicationId "com.hyperling.carbupbeta"
         minSdkVersion 8
         targetSdkVersion 36
-        versionCode 6
-        versionName "0.11"
+        versionCode 7
+        versionName "1.0.0"
     }
     buildTypes {
         release {
-            minifyEnabled false
+            minifyEnabled true
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
     }