diff --git a/app/build.gradle b/app/build.gradle
index 035af45..6bc52cd 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -29,8 +29,8 @@ android {
         applicationId "au.gov.health.covidsafe"
         minSdkVersion rootProject.ext.minSdkVersion
         targetSdkVersion rootProject.ext.targetSdkVersion
-        versionCode 125
-        versionName "2.5"
+        versionCode 128
+        versionName "2.6"
         buildConfigField "String", "GITHASH", "\"${getGitHash()}\""
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
 
diff --git a/app/src/main/java/au/gov/health/covidsafe/HomeActivity.kt b/app/src/main/java/au/gov/health/covidsafe/HomeActivity.kt
index 2daff1a..3c3c37d 100644
--- a/app/src/main/java/au/gov/health/covidsafe/HomeActivity.kt
+++ b/app/src/main/java/au/gov/health/covidsafe/HomeActivity.kt
@@ -31,6 +31,7 @@ import kotlinx.android.synthetic.main.activity_home.*
 private const val TAG = "HomeActivity"
 private const val UNAUTHORIZED = "Unauthorized"
 private const val UNAUTHENTICATED = "unauthenticated"
+private const val CLOUDFRONT = "CloudFront"
 
 class HomeActivity : FragmentActivity(), NetworkConnectionCheck.NetworkConnectionListener, SensorDelegate {
 
@@ -39,6 +40,7 @@ class HomeActivity : FragmentActivity(), NetworkConnectionCheck.NetworkConnectio
     var isWindowFocusChangeLiveData = MutableLiveData<Boolean>()
     var isJWTCorrupted = MutableLiveData<Boolean>()
     var isJWTExpired = MutableLiveData<Boolean>()
+    var cloudFrontIssue = MutableLiveData<Boolean>()
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -117,6 +119,9 @@ class HomeActivity : FragmentActivity(), NetworkConnectionCheck.NetworkConnectio
             if (it.errorBodyMessage.equals(UNAUTHORIZED) || it.errorBodyMessage.equals(UNAUTHENTICATED)) {
                 isJWTCorrupted.postValue(true)
                 isJWTExpired.postValue(true)
+            } else if (it.errorBodyMessage.equals(CLOUDFRONT)) {
+                isJWTExpired.postValue(true)
+                cloudFrontIssue.postValue(true)
             } else {
                 Log.d("LEE", "Authenticate")
                 isJWTCorrupted.postValue(false)
diff --git a/app/src/main/java/au/gov/health/covidsafe/scheduler/GetMessagesScheduler.kt b/app/src/main/java/au/gov/health/covidsafe/scheduler/GetMessagesScheduler.kt
index b4c1e6c..c892cf7 100644
--- a/app/src/main/java/au/gov/health/covidsafe/scheduler/GetMessagesScheduler.kt
+++ b/app/src/main/java/au/gov/health/covidsafe/scheduler/GetMessagesScheduler.kt
@@ -6,6 +6,7 @@ import android.app.job.JobScheduler
 import android.app.job.JobService
 import android.content.ComponentName
 import android.content.Context
+import android.util.Log
 import au.gov.health.covidsafe.BuildConfig
 import au.gov.health.covidsafe.app.TracerApp
 import au.gov.health.covidsafe.extensions.isBatteryOptimizationDisabled
@@ -26,6 +27,7 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
+import okhttp3.internal.toHeaderList
 import retrofit2.Call
 import retrofit2.Callback
 import retrofit2.Response
@@ -174,7 +176,6 @@ object GetMessagesScheduler {
             messagesCall.enqueue(object : Callback<MessagesResponse> {
                 override fun onResponse(call: Call<MessagesResponse>, response: Response<MessagesResponse>) {
                     val responseCode = response.code()
-
                     if (responseCode == 200) {
                         CentralLog.d(TAG, "onResponse() got 200 response.")
 
@@ -188,6 +189,12 @@ object GetMessagesScheduler {
                             val messageResponse = MessagesResponse(emptyList(), null, false, errorMessage.message)
                             messagesResponseCallback?.invoke(messageResponse)
                         }
+                    } else if (responseCode == 403) {
+                        val server = response.headers()["server"]
+                        if (!server.isNullOrEmpty() && server == "CloudFront") {
+                            val messageResponse = MessagesResponse(emptyList(), null, false, "CloudFront")
+                            messagesResponseCallback?.invoke(messageResponse)
+                        }
                     } else {
                         CentralLog.w(TAG, "onResponse() got error response code = $responseCode.")
                     }
diff --git a/app/src/main/java/au/gov/health/covidsafe/ui/home/HomeFragment.kt b/app/src/main/java/au/gov/health/covidsafe/ui/home/HomeFragment.kt
index 78336e0..e5c6777 100644
--- a/app/src/main/java/au/gov/health/covidsafe/ui/home/HomeFragment.kt
+++ b/app/src/main/java/au/gov/health/covidsafe/ui/home/HomeFragment.kt
@@ -73,6 +73,7 @@ class HomeFragment : BaseFragment(), EasyPermissions.PermissionCallbacks, Networ
 
     private var counter: Int = 0
     private var jwtExpired: Boolean = false
+    private var cloudFront: Boolean = false
 
     private var checkIsInternetConnected = false
     private var isAppWithLatestVersion = false
@@ -159,6 +160,7 @@ class HomeFragment : BaseFragment(), EasyPermissions.PermissionCallbacks, Networ
             isJWTExpired.observe(this@HomeFragment, isJwtExpired)
             isAppUpdateAvailableLiveData.observe(this@HomeFragment, latestAppAvailable)
             isWindowFocusChangeLiveData.observe(this@HomeFragment, refreshUiObserver)
+            cloudFrontIssue.observe(this@HomeFragment, isCloudFrontIssue)
         }
 
         homeFragmentViewModel.turnCaseNumber.observe(this, Observer { turnOn ->
@@ -205,6 +207,15 @@ class HomeFragment : BaseFragment(), EasyPermissions.PermissionCallbacks, Networ
                     }
                     permissions_card_subtitle.visibility = GONE
                     registration_layout.visibility = VISIBLE
+                    if (cloudFront) {
+                        re_register.visibility = GONE
+                        register_body.visibility = GONE
+                        geoblock_error_message.visibility = VISIBLE
+                    } else {
+                        re_register.visibility = VISIBLE
+                        register_body.visibility = VISIBLE
+                        geoblock_error_message.visibility = GONE
+                    }
                 }
             }
         })
@@ -237,6 +248,10 @@ class HomeFragment : BaseFragment(), EasyPermissions.PermissionCallbacks, Networ
         jwtExpired = expired
     }
 
+    private val isCloudFrontIssue = Observer<Boolean> {
+        cloudFront = it
+    }
+
     override fun onResume() {
         super.onResume()
 
diff --git a/app/src/main/java/au/gov/health/covidsafe/ui/onboarding/fragment/enternumber/EnterNumberFragment.kt b/app/src/main/java/au/gov/health/covidsafe/ui/onboarding/fragment/enternumber/EnterNumberFragment.kt
index bbcd66d..0d3e57f 100644
--- a/app/src/main/java/au/gov/health/covidsafe/ui/onboarding/fragment/enternumber/EnterNumberFragment.kt
+++ b/app/src/main/java/au/gov/health/covidsafe/ui/onboarding/fragment/enternumber/EnterNumberFragment.kt
@@ -3,6 +3,7 @@ package au.gov.health.covidsafe.ui.onboarding.fragment.enternumber
 import android.annotation.SuppressLint
 import android.app.AlertDialog
 import android.content.Intent
+import android.net.Uri
 import android.os.Bundle
 import android.view.KeyEvent
 import android.view.LayoutInflater
@@ -16,9 +17,9 @@ import androidx.annotation.NavigationRes
 import androidx.core.content.ContextCompat
 import androidx.core.os.bundleOf
 import androidx.core.widget.addTextChangedListener
-import au.gov.health.covidsafe.preference.Preference
 import au.gov.health.covidsafe.R
 import au.gov.health.covidsafe.app.TracerApp
+import au.gov.health.covidsafe.preference.Preference
 import au.gov.health.covidsafe.talkback.setHeading
 import au.gov.health.covidsafe.ui.base.PagerChildFragment
 import au.gov.health.covidsafe.ui.base.UploadButtonLayout
@@ -157,6 +158,18 @@ class EnterNumberFragment : PagerChildFragment() {
                 .setPositiveButton(android.R.string.yes, null).show()
     }
 
+    fun showPhoneNumberWrong() {
+        alertDialog?.dismiss()
+        alertDialog = AlertDialog.Builder(activity)
+                .setMessage(R.string.max_registrations)
+                .setIcon(android.R.drawable.ic_dialog_alert)
+                .setNegativeButton(R.string.max_registration_button2, null)
+                .setPositiveButton(R.string.max_registrations_button1) { _,_ ->
+                    startActivity(Intent(Intent.ACTION_VIEW, Uri.parse("https://covidsafe-form.service.gov.au/")))
+                }
+                .show()
+    }
+
     fun navigateToOTPPage(
             session: String,
             challengeName: String,
diff --git a/app/src/main/java/au/gov/health/covidsafe/ui/onboarding/fragment/enternumber/EnterNumberPresenter.kt b/app/src/main/java/au/gov/health/covidsafe/ui/onboarding/fragment/enternumber/EnterNumberPresenter.kt
index e74b047..093e4b7 100644
--- a/app/src/main/java/au/gov/health/covidsafe/ui/onboarding/fragment/enternumber/EnterNumberPresenter.kt
+++ b/app/src/main/java/au/gov/health/covidsafe/ui/onboarding/fragment/enternumber/EnterNumberPresenter.kt
@@ -71,9 +71,11 @@ class EnterNumberPresenter(private val enterNumberFragment: EnterNumberFragment)
                         when {
                             it is GetOnboardingOtpException.GetOtpInvalidNumberException -> {
                                 enterNumberFragment.showInvalidPhoneNumberPrompt(R.string.invalid_phone_number)
+                                enterNumberFragment.showPhoneNumberWrong()
                             }
                             context.isInternetAvailable() -> {
-                                enterNumberFragment.showGenericError()
+                                enterNumberFragment.showPhoneNumberWrong()
+//                                enterNumberFragment.showGenericError()
                             }
                             else -> {
                                 enterNumberFragment.showCheckInternetError()
diff --git a/app/src/main/res/layout/view_home_setup_incomplete.xml b/app/src/main/res/layout/view_home_setup_incomplete.xml
index 6d0cac6..aa7af36 100644
--- a/app/src/main/res/layout/view_home_setup_incomplete.xml
+++ b/app/src/main/res/layout/view_home_setup_incomplete.xml
@@ -148,6 +148,19 @@
                 tools:visibility="visible"
                 android:text="@string/jwt_expired_description" />
 
+            <TextView
+                android:id="@+id/geoblock_error_message"
+                style="@style/fontRobotoRegular16"
+                android:layout_width="0dp"
+                android:paddingEnd="12dp"
+                android:layout_height="wrap_content"
+                android:gravity="start"
+                android:textColor="@color/error_red"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintEnd_toStartOf="@+id/permission_icon"
+                app:layout_constraintTop_toTopOf="parent"
+                android:text="@string/geoblock_error_message" />
+
         </androidx.constraintlayout.widget.ConstraintLayout>
 
     </FrameLayout>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 4e376f8..d2f4636 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -296,6 +296,8 @@
   <!-- for production -->
   <string name="generic_error">Please try again later</string>
   <string name="generic_internet_error">Please check your internet connection</string>
+  <!-- Error message for when a user tries to signup outside of Australia. -->
+  <string name="geoblock_error_message">You may be connected using an internet provider from outside Australia. This could happen when using international data roaming on a non-Australian SIM card.\n\nPlease connect to an Australian network or use a local Wi-Fi internet connection to continue.</string>
   <string name="global_OK">OK</string>
   <string name="heading">Heading</string>
   <string name="hide">Hide</string>
@@ -398,6 +400,9 @@
   <string name="loading_numbers">Loading latest numbers</string>
   <string name="locally_acquired">%@ locally acquired</string>
   <string name="main_restrictions">Main restrictions</string>
+  <string name="max_registration_button2">Cancel</string>
+  <string name="max_registrations">You\'ve reached the limit to register using the same mobile number.\n\nTo use the same mobile number to register again, you must request to delete your current registration information.</string>
+  <string name="max_registrations_button1">Request deletion</string>
   <!-- Splash Screen -->
   <string name="migration_in_progress"> COVIDSafe update in progress. \n\n Please make sure you phone is not switched off until the update is complete.</string>
   <string name="minute">Minute</string>