Add message before import to let user know this is a technical feature.

src/contents/ui/MainPage.qml

@@ -4,6 +4,7 @@ import QtQuick.Controls 2.14 as Controls
 import QtQuick.Layouts 1.14 as Layouts
 import QtQuick.Controls 1.4 as Old
 import QtQuick.Dialogs 1.3 as Dialogs
+import Qt.labs.platform 1.1 as Labs
 
 Kirigami.PageRoute {
     name: "main"
@@ -22,7 +23,7 @@ Kirigami.PageRoute {
                     iconName: "application-javascript"
                     text: qsTr("Import From Carfax JSON")
                     onTriggered: {
-                        importDialog.visible = true;
+                        importMessage.visible = true;
                     }
                 },
                 Kirigami.Action {
@@ -52,7 +53,14 @@ Kirigami.PageRoute {
                         root.showPassiveNotification(qsTr("Failed to parse file."),"short");
                     }
                 }
-            }  
+            }
+            Labs.MessageDialog {
+                id:importMessage
+                title: qsTr("Warning")
+                text: qsTr("This is an advanced feature that requires you pulling JSON file from Carfax website unofficially in advanced. Do you want to continue?")
+                buttons: Labs.MessageDialog.Yes | Labs.MessageDialog.No
+                onYesClicked: importDialog.visible = true
+            }
             Kirigami.CardsListView {
                     anchors.fill: parent
                     id: vehicleView