diff --git a/Android/app/src/main/java/com/matthaigh27/chatgptwrapper/data/remote/ApiClient.kt b/Android/app/src/main/java/com/matthaigh27/chatgptwrapper/data/remote/ApiClient.kt
index 18f81d3..b0358e0 100644
--- a/Android/app/src/main/java/com/matthaigh27/chatgptwrapper/data/remote/ApiClient.kt
+++ b/Android/app/src/main/java/com/matthaigh27/chatgptwrapper/data/remote/ApiClient.kt
@@ -15,13 +15,17 @@ class ApiClient {
     val TIME_OUT_READ = 60L
     val TIME_OUT_WRITE = 60L
 
-    var apiService: ApiService
+    lateinit var apiService: ApiService
 
-    private var serverUrl: String
-    private var client: OkHttpClient
-    private var retrofit: Retrofit
+    private lateinit var serverUrl: String
+    private lateinit var client: OkHttpClient
+    private lateinit var retrofit: Retrofit
 
     init {
+        initClient()
+    }
+
+    fun initClient() {
         /**
          * The server url is set to url that a user stored before.
          * If the user run this app at first, server url is set to default url.
diff --git a/Android/app/src/main/java/com/matthaigh27/chatgptwrapper/data/repository/RemoteRepository.kt b/Android/app/src/main/java/com/matthaigh27/chatgptwrapper/data/repository/RemoteRepository.kt
index fe6b4be..3826959 100644
--- a/Android/app/src/main/java/com/matthaigh27/chatgptwrapper/data/repository/RemoteRepository.kt
+++ b/Android/app/src/main/java/com/matthaigh27/chatgptwrapper/data/repository/RemoteRepository.kt
@@ -30,8 +30,6 @@ import kotlin.coroutines.suspendCoroutine
 
 
 object RemoteRepository {
-    private val apiService = ApiClient.instance.apiService
-
     /**
      * This function is used to get keys to manage backend.
      */
@@ -54,7 +52,7 @@ object RemoteRepository {
         onSuccess: OnSuccess<ApiResponse<HelpCommandResult>>,
         onFailure: OnFailure<String>
     ) {
-        val call = apiService.getAllHelpCommands(BaseApiRequest(getKeys()))
+        val call = ApiClient.instance.apiService.getAllHelpCommands(BaseApiRequest(getKeys()))
 
         call.enqueue(object : Callback<ApiResponse<HelpCommandResult>> {
             override fun onResponse(call: Call<ApiResponse<HelpCommandResult>>, response: Response<ApiResponse<HelpCommandResult>>) {
@@ -76,7 +74,7 @@ object RemoteRepository {
         onSuccess: OnSuccess<ApiResponse<CommonResult>>,
         onFailure: OnFailure<String>
     ) {
-        val call = apiService.sendNotification(request)
+        val call = ApiClient.instance.apiService.sendNotification(request)
 
         call.enqueue(object : Callback<ApiResponse<CommonResult>> {
             override fun onResponse(call: Call<ApiResponse<CommonResult>>, response: Response<ApiResponse<CommonResult>>) {
@@ -98,7 +96,7 @@ object RemoteRepository {
         onSuccess: OnSuccess<ApiResponse<String>>,
         onFailure: OnFailure<String>
     ) {
-        val call = apiService.trainContacts(request)
+        val call = ApiClient.instance.apiService.trainContacts(request)
 
         call.enqueue(object : Callback<ApiResponse<String>> {
             override fun onResponse(
@@ -119,7 +117,7 @@ object RemoteRepository {
 
     suspend fun trainImage(request: TrainImageApiRequest) : ApiResource<ApiResponse<TrainImageResult>> = suspendCoroutine { continuation ->
 
-        val call = apiService.trainImage(request)
+        val call = ApiClient.instance.apiService.trainImage(request)
 
         call.enqueue(object : Callback<ApiResponse<TrainImageResult>> {
             override fun onResponse(
@@ -143,7 +141,7 @@ object RemoteRepository {
         onSuccess: OnSuccess<ApiResponse<ImageRelatenessResult>>,
         onFailure: OnFailure<String>
     ) {
-        val call = apiService.getImageRelatedness(request)
+        val call = ApiClient.instance.apiService.getImageRelatedness(request)
 
         call.enqueue(object : Callback<ApiResponse<ImageRelatenessResult>> {
             override fun onResponse(
@@ -167,7 +165,7 @@ object RemoteRepository {
         onSuccess: OnSuccess<ApiResponse<ArrayList<MailModel>>>,
         onFailure: OnFailure<String>
     ) {
-        val call = apiService.readEmails(request)
+        val call = ApiClient.instance.apiService.readEmails(request)
 
         call.enqueue(object : Callback<ApiResponse<ArrayList<MailModel>>> {
             override fun onResponse(
@@ -191,7 +189,7 @@ object RemoteRepository {
         onSuccess: OnSuccess<ApiResponse<String>>,
         onFailure: OnFailure<String>
     ) {
-        val call = apiService.sendEmail(request)
+        val call = ApiClient.instance.apiService.sendEmail(request)
 
         call.enqueue(object : Callback<ApiResponse<String>> {
             override fun onResponse(
diff --git a/Android/app/src/main/java/com/matthaigh27/chatgptwrapper/data/repository/SharedPreferencesRepository.kt b/Android/app/src/main/java/com/matthaigh27/chatgptwrapper/data/repository/SharedPreferencesRepository.kt
index fa725cc..8487a0b 100644
--- a/Android/app/src/main/java/com/matthaigh27/chatgptwrapper/data/repository/SharedPreferencesRepository.kt
+++ b/Android/app/src/main/java/com/matthaigh27/chatgptwrapper/data/repository/SharedPreferencesRepository.kt
@@ -3,6 +3,7 @@ package com.matthaigh27.chatgptwrapper.data.repository
 import android.content.Context
 import com.matthaigh27.chatgptwrapper.RisingApplication.Companion.appContext
 import com.matthaigh27.chatgptwrapper.data.models.setting.SettingModel
+import com.matthaigh27.chatgptwrapper.data.remote.ApiClient
 import com.matthaigh27.chatgptwrapper.utils.helpers.chat.SettingHelper.emptySettingModel
 
 object SharedPreferencesRepository {
@@ -12,6 +13,7 @@ object SharedPreferencesRepository {
         val jsonString = config.toString()
         editor.putString("config", jsonString)
         editor.apply()
+        ApiClient.instance.initClient()
     }
 
     fun getConfig(): SettingModel {