diff --git a/app/src/main/java/com/example/hpostesting/presentation/dashboard/DashboardActivity.kt b/app/src/main/java/com/example/hpostesting/presentation/dashboard/DashboardActivity.kt
index 012e0f3..1c2b90a 100644
--- a/app/src/main/java/com/example/hpostesting/presentation/dashboard/DashboardActivity.kt
+++ b/app/src/main/java/com/example/hpostesting/presentation/dashboard/DashboardActivity.kt
@@ -53,6 +53,7 @@ open interface IDataCollector: NatsMessageCallback {
 class DashboardActivity : AppCompatActivity(), IDataCollector {
 
     val TAG = "DashboardActivity"
+    private var isRegistered= false
     private lateinit var appBarConfiguration: AppBarConfiguration
     private lateinit var binding: ActivityDashboardBinding
     lateinit var sharedPreferences: SharedPreferences
@@ -170,7 +171,10 @@ class DashboardActivity : AppCompatActivity(), IDataCollector {
 
         // Register a BroadcastReceiver to receive the download complete event
         val filter = IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE)
-        registerReceiver(downloadReceiver, filter)
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            isRegistered = true
+            registerReceiver(downloadReceiver, filter, RECEIVER_EXPORTED)
+        }
     }
     private fun extractApkUrl(responseBody: ResponseBody): String {
         return responseBody.string()
@@ -214,8 +218,15 @@ class DashboardActivity : AppCompatActivity(), IDataCollector {
     }
 
     override fun onDestroy() {
+        try {
+            if (isRegistered){
+                unregisterReceiver(downloadReceiver)
+            }
+        }catch (e: IllegalArgumentException){
+            Log.e("HOmeFragment",e.toString())
+        }
+
         super.onDestroy()
-        unregisterReceiver(downloadReceiver)
     }
 
     override fun onResume() {
diff --git a/app/src/main/java/com/example/hpostesting/presentation/dashboard/HomeFragment.kt b/app/src/main/java/com/example/hpostesting/presentation/dashboard/HomeFragment.kt
index cc4d979..a4103fd 100644
--- a/app/src/main/java/com/example/hpostesting/presentation/dashboard/HomeFragment.kt
+++ b/app/src/main/java/com/example/hpostesting/presentation/dashboard/HomeFragment.kt
@@ -12,6 +12,7 @@ import android.content.IntentFilter
 import android.content.SharedPreferences
 import android.net.Uri
 import android.os.BatteryManager
+import android.os.Build
 import android.os.Bundle
 import android.util.Base64
 import android.util.Log
@@ -71,6 +72,7 @@ import java.util.zip.ZipInputStream
 @AndroidEntryPoint
 class HomeFragment : Fragment() {
     private var downloadId: Long = 0
+    private var isRegistered = false
     private lateinit var binding: FragmentHomeBinding
     private val viewModel: TestRightViewModel by activityViewModels()
     private val hemoCubeViewModel: HemoCubeViewModel by activityViewModels()
@@ -1155,7 +1157,10 @@ class HomeFragment : Fragment() {
 
         // Register a BroadcastReceiver to receive the download complete event
         val filter = IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE)
-        requireActivity().registerReceiver(downloadReceiver, filter)
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            isRegistered = true
+            requireActivity().registerReceiver(downloadReceiver, filter, Context.RECEIVER_EXPORTED)
+        }
     }
     private fun extractApkUrl(responseBody: ResponseBody): String {
         return responseBody.string()
@@ -1200,8 +1205,15 @@ class HomeFragment : Fragment() {
     }
 
     override fun onDestroy() {
+        try {
+            if (isRegistered){
+                requireActivity().unregisterReceiver(downloadReceiver)
+            }
+        }catch (e: IllegalArgumentException){
+            Log.e("HOmeFragment",e.toString())
+        }
+
         super.onDestroy()
-        requireActivity().unregisterReceiver(downloadReceiver)
     }
 
 }
diff --git a/app/src/main/res/drawable/scaner_icon.png b/app/src/main/res/drawable/baseline_qr_code_scanner_24_x.png
similarity index 100%
rename from app/src/main/res/drawable/scaner_icon.png
rename to app/src/main/res/drawable/baseline_qr_code_scanner_24_x.png
diff --git a/app/src/main/res/layout/activity_buffer_check.xml b/app/src/main/res/layout/activity_buffer_check.xml
index cb786da..f955160 100644
--- a/app/src/main/res/layout/activity_buffer_check.xml
+++ b/app/src/main/res/layout/activity_buffer_check.xml
@@ -15,7 +15,7 @@
             android:layout_width="match_parent"
             android:layout_height="?attr/actionBarSize"
             android:background="?attr/colorPrimary"
-            app:titleTextColor="#FFFFFF"
+            app:titleTextColor="@color/blue_text_color"
             android:elevation="4dp"
             app:menu="@menu/my_menu"
             android:theme="@style/ToolbarTheme"
diff --git a/app/src/main/res/layout/activity_dashboard.xml b/app/src/main/res/layout/activity_dashboard.xml
index 6edd999..357d446 100644
--- a/app/src/main/res/layout/activity_dashboard.xml
+++ b/app/src/main/res/layout/activity_dashboard.xml
@@ -19,6 +19,7 @@
         android:layout_gravity="start"
         android:fitsSystemWindows="true"
         app:headerLayout="@layout/nav_header_dashboard"
-        app:menu="@menu/activity_main_drawer" />
+        app:menu="@menu/activity_main_drawer"
+        app:itemIconTint="@color/blue_text_color" />
 
 </androidx.drawerlayout.widget.DrawerLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_hemocube.xml b/app/src/main/res/layout/activity_hemocube.xml
index 2d0b501..de0fc62 100644
--- a/app/src/main/res/layout/activity_hemocube.xml
+++ b/app/src/main/res/layout/activity_hemocube.xml
@@ -13,7 +13,7 @@
             android:layout_width="match_parent"
             android:layout_height="?attr/actionBarSize"
             android:background="?attr/colorPrimary"
-            app:titleTextColor="#FFFFFF"
+            app:titleTextColor="@color/blue_text_color"
             android:elevation="4dp"
             app:menu="@menu/my_menu"
             android:theme="@style/ToolbarTheme"
diff --git a/app/src/main/res/layout/activity_kit_scan.xml b/app/src/main/res/layout/activity_kit_scan.xml
index aa84355..8f371cc 100644
--- a/app/src/main/res/layout/activity_kit_scan.xml
+++ b/app/src/main/res/layout/activity_kit_scan.xml
@@ -32,6 +32,7 @@
         android:layout_marginHorizontal="24dp"
         android:layout_marginTop="16dp"
         android:text="@string/scan_qr_code_of_the_kit"
+        app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@id/app_bar_layout" />
 
@@ -40,11 +41,12 @@
         android:layout_width="258dp"
         android:layout_height="56dp"
         android:layout_margin="24dp"
-        android:drawableLeft="@drawable/baseline_qr_code_scanner_24"
+        android:drawableLeft="@drawable/baseline_qr_code_scanner_24_x"
         android:text="@string/scan_now"
         android:textColor="@color/black"
         app:backgroundTint="@color/blue_app_light"
         app:cornerRadius="100dp"
+        app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@+id/tv_title" />
 
@@ -75,7 +77,7 @@
             android:layout_centerVertical="true"
             android:layout_marginLeft="16dp"
             android:layout_toLeftOf="@id/tvText1"
-            android:background="@color/gray" />
+            android:background="@color/red" />
 
         <View
             android:layout_width="match_parent"
@@ -83,7 +85,7 @@
             android:layout_centerVertical="true"
             android:layout_marginRight="16dp"
             android:layout_toRightOf="@id/tvText1"
-            android:background="@color/gray" />
+            android:background="@color/red" />
 
     </RelativeLayout>
 
@@ -96,6 +98,7 @@
         android:layout_marginHorizontal="24dp"
         android:layout_marginTop="48dp"
         android:text="@string/enter_kit_serial_number_manually"
+        app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@id/seperator1" />
 
diff --git a/app/src/main/res/layout/activity_test_right.xml b/app/src/main/res/layout/activity_test_right.xml
index 0f42917..4097aa7 100644
--- a/app/src/main/res/layout/activity_test_right.xml
+++ b/app/src/main/res/layout/activity_test_right.xml
@@ -15,7 +15,7 @@
             android:layout_width="match_parent"
             android:layout_height="?attr/actionBarSize"
             android:background="?attr/colorPrimary"
-            app:titleTextColor="#FFFFFF"
+            app:titleTextColor="@color/blue_text_color"
             android:elevation="4dp"
             app:menu="@menu/my_menu"
             android:theme="@style/ToolbarTheme"
diff --git a/app/src/main/res/layout/activity_trueheme.xml b/app/src/main/res/layout/activity_trueheme.xml
index f959890..2fce4f3 100644
--- a/app/src/main/res/layout/activity_trueheme.xml
+++ b/app/src/main/res/layout/activity_trueheme.xml
@@ -13,7 +13,7 @@
             android:layout_width="match_parent"
             android:layout_height="?attr/actionBarSize"
             android:background="?attr/colorPrimary"
-            app:titleTextColor="#FFFFFF"
+            app:titleTextColor="@color/blue_text_color"
             android:elevation="4dp"
             app:menu="@menu/my_menu"
             android:theme="@style/ToolbarTheme"
diff --git a/app/src/main/res/layout/app_bar_dashboard.xml b/app/src/main/res/layout/app_bar_dashboard.xml
index 9361fe9..20692f4 100644
--- a/app/src/main/res/layout/app_bar_dashboard.xml
+++ b/app/src/main/res/layout/app_bar_dashboard.xml
@@ -14,8 +14,9 @@
         <androidx.appcompat.widget.Toolbar
             android:id="@+id/toolbar"
             android:layout_width="match_parent"
+            app:titleTextColor="@color/blue_text_color"
             android:layout_height="?attr/actionBarSize"
-            android:background="?attr/colorPrimary"
+            android:background="@color/new_blue"
             app:popupTheme="@style/Theme.HPOS.PopupOverlay" />
 
     </com.google.android.material.appbar.AppBarLayout>
diff --git a/app/src/main/res/layout/fragment_hemo_cube_reference.xml b/app/src/main/res/layout/fragment_hemo_cube_reference.xml
index 237addd..771f8be 100644
--- a/app/src/main/res/layout/fragment_hemo_cube_reference.xml
+++ b/app/src/main/res/layout/fragment_hemo_cube_reference.xml
@@ -108,8 +108,8 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_marginHorizontal="24dp"
-            android:layout_marginTop="48dp"
             android:text="@string/enter_kit_serial_number_manually"
+            app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"
             tools:ignore="MissingConstraints" />
 
diff --git a/app/src/main/res/layout/fragment_jig.xml b/app/src/main/res/layout/fragment_jig.xml
index 74caab0..5266d7f 100644
--- a/app/src/main/res/layout/fragment_jig.xml
+++ b/app/src/main/res/layout/fragment_jig.xml
@@ -38,6 +38,7 @@
         android:layout_marginHorizontal="24dp"
         android:layout_marginTop="16dp"
         android:text="Scan to get the code"
+        app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@id/tv_subtitle2" />
 
@@ -58,11 +59,12 @@
         android:layout_width="258dp"
         android:layout_height="56dp"
         android:layout_margin="24dp"
-        android:drawableLeft="@drawable/baseline_qr_code_scanner_24"
+        android:drawableLeft="@drawable/baseline_qr_code_scanner_24_x"
         android:text="@string/scan_now"
         android:textColor="@color/black"
         app:backgroundTint="@color/blue_app_light"
         app:cornerRadius="100dp"
+        app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@+id/tv_title" />
 
@@ -90,9 +92,9 @@
         android:clickable="false"
         android:gravity="center"
         android:text="Refresh"
-        android:visibility="visible"
         android:textColor="@color/white"
-        app:layout_constraintEnd_toEndOf="@id/btn_scan_now"
+        android:visibility="visible"
+        app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@id/btn_scan_now" />
 
diff --git a/app/src/main/res/layout/fragment_register_one_scan_abha.xml b/app/src/main/res/layout/fragment_register_one_scan_abha.xml
index 1a811da..c7a381e 100644
--- a/app/src/main/res/layout/fragment_register_one_scan_abha.xml
+++ b/app/src/main/res/layout/fragment_register_one_scan_abha.xml
@@ -16,6 +16,7 @@
             android:layout_marginHorizontal="24dp"
             android:layout_marginTop="16dp"
             android:text="@string/scan_patient_abha_id_card"
+            app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toTopOf="parent" />
 
@@ -25,11 +26,12 @@
             android:layout_height="56dp"
             android:layout_marginHorizontal="24dp"
             android:layout_marginTop="16dp"
-            android:drawableLeft="@drawable/baseline_qr_code_scanner_24"
+            android:drawableLeft="@drawable/baseline_qr_code_scanner_24_x"
             android:text="@string/scan_now"
             android:textColor="@color/black"
             app:backgroundTint="@color/blue_app_light"
             app:cornerRadius="100dp"
+            app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toBottomOf="@+id/tv_title" />
 
@@ -60,7 +62,7 @@
                 android:layout_centerVertical="true"
                 android:layout_marginLeft="16dp"
                 android:layout_toLeftOf="@id/tvText1"
-                android:background="@color/gray" />
+                android:background="@color/red" />
 
             <View
                 android:layout_width="match_parent"
@@ -68,7 +70,7 @@
                 android:layout_centerVertical="true"
                 android:layout_marginRight="16dp"
                 android:layout_toRightOf="@id/tvText1"
-                android:background="@color/gray" />
+                android:background="@color/red" />
 
         </RelativeLayout>
 
@@ -81,6 +83,7 @@
             android:layout_marginHorizontal="24dp"
             android:layout_marginTop="48dp"
             android:text="@string/enter_abha_number_manualy"
+            app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toBottomOf="@id/seperator1" />
 
@@ -144,7 +147,7 @@
                 android:layout_centerVertical="true"
                 android:layout_marginLeft="16dp"
                 android:layout_toLeftOf="@id/tvText2"
-                android:background="@color/gray" />
+                android:background="@color/red" />
 
             <View
                 android:layout_width="match_parent"
@@ -152,7 +155,7 @@
                 android:layout_centerVertical="true"
                 android:layout_marginRight="16dp"
                 android:layout_toRightOf="@id/tvText2"
-                android:background="@color/gray" />
+                android:background="@color/red" />
 
         </RelativeLayout>
 
@@ -164,6 +167,7 @@
             android:layout_marginHorizontal="24dp"
             android:layout_marginTop="48dp"
             android:text="Create ABHA ID card"
+            app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toBottomOf="@id/seperator2" />
 
@@ -177,6 +181,7 @@
             android:textColor="@color/black"
             app:backgroundTint="@color/blue_app_light"
             app:cornerRadius="100dp"
+            app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toBottomOf="@+id/tv_title3" />
 
diff --git a/app/src/main/res/layout/fragment_register_two_aadhaar.xml b/app/src/main/res/layout/fragment_register_two_aadhaar.xml
index 70703e7..a223323 100644
--- a/app/src/main/res/layout/fragment_register_two_aadhaar.xml
+++ b/app/src/main/res/layout/fragment_register_two_aadhaar.xml
@@ -16,6 +16,7 @@
             android:layout_marginHorizontal="24dp"
             android:layout_marginTop="16dp"
             android:text="@string/scan_patient_aadhaar_card"
+            app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toTopOf="parent" />
 
@@ -24,11 +25,12 @@
             android:layout_width="258dp"
             android:layout_height="56dp"
             android:layout_margin="24dp"
-            android:drawableLeft="@drawable/scaner_icon"
+            android:drawableLeft="@drawable/baseline_qr_code_scanner_24_x"
             android:text="@string/scan_now"
             android:textColor="@color/black"
             app:backgroundTint="@color/blue_app_light"
             app:cornerRadius="100dp"
+            app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toBottomOf="@+id/tv_title" />
 
@@ -59,7 +61,7 @@
                 android:layout_centerVertical="true"
                 android:layout_marginLeft="16dp"
                 android:layout_toLeftOf="@id/tvText1"
-                android:background="@color/gray" />
+                android:background="@color/red" />
 
             <View
                 android:layout_width="match_parent"
@@ -67,7 +69,7 @@
                 android:layout_centerVertical="true"
                 android:layout_marginRight="16dp"
                 android:layout_toRightOf="@id/tvText1"
-                android:background="@color/gray" />
+                android:background="@color/red" />
 
         </RelativeLayout>
 
@@ -80,6 +82,7 @@
             android:layout_marginHorizontal="24dp"
             android:layout_marginTop="48dp"
             android:text="@string/enter_aadhaar_number_manualy"
+            app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toBottomOf="@id/seperator1" />
 
diff --git a/app/src/main/res/layout/fragment_trueheme_sample.xml b/app/src/main/res/layout/fragment_trueheme_sample.xml
index 7966a1a..4c24f6e 100644
--- a/app/src/main/res/layout/fragment_trueheme_sample.xml
+++ b/app/src/main/res/layout/fragment_trueheme_sample.xml
@@ -108,8 +108,8 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_marginHorizontal="24dp"
-            android:layout_marginTop="48dp"
             android:text="@string/enter_kit_serial_number_manually"
+            app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"
             tools:ignore="MissingConstraints" />
 
diff --git a/app/src/main/res/layout/nav_header_dashboard.xml b/app/src/main/res/layout/nav_header_dashboard.xml
index bbd20a9..0292541 100644
--- a/app/src/main/res/layout/nav_header_dashboard.xml
+++ b/app/src/main/res/layout/nav_header_dashboard.xml
@@ -3,7 +3,7 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="@dimen/nav_header_height"
-    android:background="@color/blue_app"
+    android:background="@color/new_blue"
     android:gravity="bottom"
     android:orientation="vertical"
     android:paddingLeft="@dimen/activity_horizontal_margin"
@@ -30,13 +30,17 @@
     <TextView
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
+        android:layout_marginLeft="8sp"
         android:paddingTop="@dimen/nav_header_vertical_spacing"
         android:text="@string/nav_header_title"
-        android:textAppearance="@style/TextAppearance.AppCompat.Body1" />
+        android:textAppearance="@style/TextAppearance.AppCompat.Body1"
+        android:textColor="@color/blue_text_color" />
 
     <TextView
         android:id="@+id/textView"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="@string/nav_header_subtitle" />
+        android:layout_marginLeft="8sp"
+        android:text="@string/nav_header_subtitle"
+        android:textColor="@color/blue_text_color" />
 </LinearLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/user_item_view.xml b/app/src/main/res/layout/user_item_view.xml
index 61e08c5..451e1c5 100644
--- a/app/src/main/res/layout/user_item_view.xml
+++ b/app/src/main/res/layout/user_item_view.xml
@@ -82,10 +82,11 @@
                 android:textColor="@color/white"
                 app:layout_constraintStart_toEndOf="@+id/btn_blood"
                 app:layout_constraintBottom_toBottomOf="@+id/btn_blood" />
+
             <Button
                 android:id="@+id/btn_blood"
                 android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
+                android:layout_height="50dp"
                 android:layout_marginHorizontal="16dp"
                 android:text="@string/blood_group"
                 android:textColor="@color/white"
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index 24b11df..418e49d 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -8,6 +8,8 @@
     <color name="black">#FF000000</color>
     <color name="white">#FFFFFFFF</color>
     <color name="gray">#808080</color>
+    <color name="blue_text_color">#0E2347</color>
+
 
     <color name="brightGreen">#00FF00</color>
     <color name="green_2">#295F2D</color>