diff --git a/lib/Screens/Configurations/configurations_screen.dart b/lib/Screens/Configurations/configurations_screen.dart
index 6901ec5..e18b3e9 100644
--- a/lib/Screens/Configurations/configurations_screen.dart
+++ b/lib/Screens/Configurations/configurations_screen.dart
@@ -38,7 +38,7 @@ class _ConfigurationsScreenState extends State<ConfigurationsScreen> {
       return Align(
         alignment: AlignmentDirectional.topCenter,
         child: FutureBuilder(
-            future: getConfigurations(appContext),
+            future: getConfigurations(managerAppContext),
             builder: (context, AsyncSnapshot<dynamic> snapshot) {
               if (snapshot.connectionState == ConnectionState.done) {
                 var tempOutput = new List<ConfigurationDTO>.from(snapshot.data);
@@ -133,8 +133,8 @@ class _ConfigurationsScreenState extends State<ConfigurationsScreen> {
   }
 }
 
-Future<List<ConfigurationDTO>> getConfigurations(dynamic appContext) async {
-  List<ConfigurationDTO> configurations = await appContext.getContext().clientAPI.configurationApi.configurationGet();
+Future<List<ConfigurationDTO>> getConfigurations(ManagerAppContext managerAppContext) async {
+  List<ConfigurationDTO> configurations = await managerAppContext.clientAPI.configurationApi.configurationGet(instanceId: managerAppContext.instanceId);
   //print("number of configurations " + configurations.length.toString());
   configurations.forEach((element) {
     //print(element);
diff --git a/lib/Screens/Configurations/new_configuration_popup.dart b/lib/Screens/Configurations/new_configuration_popup.dart
index a31d2b7..e916dff 100644
--- a/lib/Screens/Configurations/new_configuration_popup.dart
+++ b/lib/Screens/Configurations/new_configuration_popup.dart
@@ -12,57 +12,63 @@ import 'package:managerapi/api.dart';
 
 void showNewConfiguration(AppContext appContext, ValueChanged<bool> isImport, BuildContext context, BuildContext mainContext) {
   ConfigurationDTO configurationDTO = new ConfigurationDTO();
+  Size size = MediaQuery.of(mainContext).size;
+
   showDialog(
       builder: (BuildContext context) => AlertDialog(
         shape: RoundedRectangleBorder(
             borderRadius: BorderRadius.all(Radius.circular(20.0))
         ),
         content: SingleChildScrollView(
-          child: Column(
-            children: [
-              Text("Nouvelle configuration", style: new TextStyle(fontSize: 25, fontWeight: FontWeight.w400)),
-              Column(
-                children: [
-                  StringInputContainer(
-                    label: "Nom :",
-                    initialValue: configurationDTO.label,
-                    onChanged: (value) {
-                      configurationDTO.label = value;
-                    },
-                  ),
-                ],
-              ),
-              Text("ou"),
-              Column(
-                children: [
-                  Padding(
-                    padding: const EdgeInsets.only(bottom: 5.0),
-                    child: Text("Importer", style: TextStyle(fontSize: 25, fontWeight: FontWeight.w300)),
-                  ),
-                  InkWell(
-                    onTap: () async {
-                      FilePickerResult result = await FilePicker.platform.pickFiles();
-
-                      //String result = filePicker();
-                      if (result != null) {
-
-                        await FileHelper().importConfiguration(result, null, appContext.getContext().clientAPI, mainContext);
-                        isImport(true);
-                        Navigator.of(context).pop();
-                      }
-                    },
-                    child: Padding(
-                      padding: const EdgeInsets.all(10.0),
-                      child: Icon(
-                          Icons.file_upload,
-                          color: kPrimaryColor,
-                          size: 30
-                      ),
+          child: SizedBox(
+            width: size.width*0.3,
+            height: size.height*0.3,
+            child: Column(
+              children: [
+                Text("Nouvelle configuration", style: new TextStyle(fontSize: 25, fontWeight: FontWeight.w400)),
+                Column(
+                  children: [
+                    StringInputContainer(
+                      label: "Nom :",
+                      initialValue: configurationDTO.label,
+                      onChanged: (value) {
+                        configurationDTO.label = value;
+                      },
                     ),
-                  )
-                ]
-              )
-            ],
+                  ],
+                ),
+                Text("ou"),
+                Column(
+                  children: [
+                    Padding(
+                      padding: const EdgeInsets.only(bottom: 5.0),
+                      child: Text("Importer", style: TextStyle(fontSize: 25, fontWeight: FontWeight.w300)),
+                    ),
+                    InkWell(
+                      onTap: () async {
+                        FilePickerResult result = await FilePicker.platform.pickFiles();
+
+                        //String result = filePicker();
+                        if (result != null) {
+
+                          await FileHelper().importConfiguration(result, null, appContext.getContext().clientAPI, mainContext);
+                          isImport(true);
+                          Navigator.of(context).pop();
+                        }
+                      },
+                      child: Padding(
+                        padding: const EdgeInsets.all(10.0),
+                        child: Icon(
+                            Icons.file_upload,
+                            color: kPrimaryColor,
+                            size: 30
+                        ),
+                      ),
+                    )
+                  ]
+                )
+              ],
+            ),
           ),
         ),
         actions: <Widget>[
diff --git a/lib/Screens/Resources/resources_screen.dart b/lib/Screens/Resources/resources_screen.dart
index a113dc9..99417d7 100644
--- a/lib/Screens/Resources/resources_screen.dart
+++ b/lib/Screens/Resources/resources_screen.dart
@@ -137,7 +137,8 @@ Future<ResourceDTO> create(ResourceDTO resourceDTO, List<File> files, List<Platf
         // test if Correct url
         bool _validURL = Uri.parse(resourceDTO.data).isAbsolute;
         if(_validURL) {
-          ResourceDTO newResource = await appContext.getContext().clientAPI.resourceApi.resourceCreate(resourceDTO);
+          resourceDTO.instanceId = (appContext.getContext() as ManagerAppContext).instanceId;
+          ResourceDTO newResource = await (appContext.getContext() as ManagerAppContext).clientAPI.resourceApi.resourceCreate(resourceDTO);
           showNotification(Colors.green, kWhite, 'La ressource a été créée avec succès', context, null);
 
           return newResource;
diff --git a/lib/Screens/login_screen.dart b/lib/Screens/login_screen.dart
index be499a8..1032c8b 100644
--- a/lib/Screens/login_screen.dart
+++ b/lib/Screens/login_screen.dart
@@ -117,10 +117,6 @@ class _LoginScreenState extends State<LoginScreen> {
 
   @override
   void initState() {
-    var url = window.location.href;
-    if(url.contains("fortsaintheribert")) {
-      this.pageTitle = "Fort de Saint Héribert";
-    }
     this.isRememberMe = widget.session.rememberMe;
     this.host = "https://api.mymuseum.be"; // "http://localhost:5000" //widget.session.host; // MDLF "http://192.168.1.19:8089" // "https://api.mymuseum.be"
     //this.email = "test@email.be"; //widget.session.email;
@@ -128,11 +124,37 @@ class _LoginScreenState extends State<LoginScreen> {
     super.initState();
   }
 
+  ManagerAppContext initInstance(ManagerAppContext managerAppContext) {
+    var url = window.location.href;
+    if(!url.contains("localhost")) {
+      var urlParts = url.split('.');
+      if(urlParts.length > 0) {
+        var subdomain = urlParts[0].replaceAll('https://', '');
+        switch(subdomain) {
+          case "manager":
+            this.pageTitle = "MyMuseum";
+            break;
+          case "fortsaintheribert":
+            this.pageTitle = "Fort de Saint Héribert";
+            break;
+        }
+      } else {
+        print("subdomain not found");
+      }
+    } else {
+      print("localhost.. set mymuseum instance by default");
+    }
+
+    return managerAppContext;
+  }
+
   @override
   Widget build(BuildContext context) {
     final appContext = Provider.of<AppContext>(context);
     Size size = MediaQuery.of(context).size;
 
+    initInstance(appContext.getContext());
+
     return Scaffold(
       body: Center(
         child: SingleChildScrollView(