diff --git a/Podfile b/Podfile
index f27057546..13516d6d6 100644
--- a/Podfile
+++ b/Podfile
@@ -43,7 +43,7 @@ when String # specific MatrixSDK released version
 $matrixSDKVersionSpec = $matrixSDKVersion
 end
 
-$matrixSDKVersionSpec = { :git => 'https://dl-gitlab.example.com/bwmessenger/bundesmessenger/bundesmessenger-ios-sdk', :tag => 'v2.15.0-RC02' }
+$matrixSDKVersionSpec = { :git => 'https://dl-gitlab.example.com/bwmessenger/bundesmessenger/bundesmessenger-ios-sdk', :tag => 'v2.15.0-RC03' }
 
 # Method to import the MatrixSDK
 def import_MatrixSDK
diff --git a/Riot/Modules/Home/AllChats/AllChatsCoordinator.swift b/Riot/Modules/Home/AllChats/AllChatsCoordinator.swift
index b0b657bfe..cebaf0abb 100644
--- a/Riot/Modules/Home/AllChats/AllChatsCoordinator.swift
+++ b/Riot/Modules/Home/AllChats/AllChatsCoordinator.swift
@@ -143,15 +143,7 @@ class AllChatsCoordinator: NSObject, SplitViewMasterCoordinatorProtocol {
     }
     
     func pinUnlocked() {
-        checkMaintenanceStatus()
-        enableMaintenanceTimer(true)
-        
-        self.bwiCheckForMatomoPromt()
-        BWIAnalytics.sharedTracker.readUserConfig()
-        
-        if BWIBuildSettings.shared.bwiPersonalNotesRoom {
-            self.bwiCheckForPersonalNotesRoom()
-        }
+        onBWIAppStart()
     }
     
     func bwiOnUnlockedByPin() {
@@ -765,6 +757,21 @@ class AllChatsCoordinator: NSObject, SplitViewMasterCoordinatorProtocol {
             maintenanceTimer = Timer.scheduledTimer(timeInterval: 10.0, target: self, selector: #selector(checkMaintenanceStatus), userInfo: nil, repeats: true)
         }
     }
+    
+    private func onBWIAppStart() {
+        checkMaintenanceStatus()
+        enableMaintenanceTimer(true)
+        
+        self.bwiCheckForMatomoPromt()
+        BWIAnalytics.sharedTracker.readUserConfig()
+        
+        if BWIBuildSettings.shared.bwiPersonalNotesRoom {
+            self.bwiCheckForPersonalNotesRoom()
+        }
+        
+        // bwi #4478: refresh wellknown a bit more often
+        self.currentMatrixSession?.refreshHomeserverWellknown(false, success: nil, failure: nil)
+    }
 }
 
 extension AllChatsCoordinator: SignOutFlowPresenterDelegate {
@@ -788,15 +795,7 @@ extension AllChatsCoordinator: AllChatsViewControllerDelegate {
     func allChatsViewControllerDidCompleteAuthentication(_ allChatsViewController: AllChatsViewController) {
         self.delegate?.splitViewMasterCoordinatorDidCompleteAuthentication(self)
         
-        checkMaintenanceStatus()
-        enableMaintenanceTimer(true)
-        
-        self.bwiCheckForMatomoPromt()
-        BWIAnalytics.sharedTracker.resetMatomo()
-        
-        if BWIBuildSettings.shared.bwiPersonalNotesRoom {
-            self.bwiCheckForPersonalNotesRoom()
-        }
+        onBWIAppStart()
     }
     
     func allChatsViewController(_ allChatsViewController: AllChatsViewController, didSelectRoomWithParameters roomNavigationParameters: RoomNavigationParameters, completion: @escaping () -> Void) {
diff --git a/RiotSwiftUI/Modules/Authentication/Common/Service/MatrixSDK/AuthenticationService.swift b/RiotSwiftUI/Modules/Authentication/Common/Service/MatrixSDK/AuthenticationService.swift
index 5802166bb..94e185d07 100644
--- a/RiotSwiftUI/Modules/Authentication/Common/Service/MatrixSDK/AuthenticationService.swift
+++ b/RiotSwiftUI/Modules/Authentication/Common/Service/MatrixSDK/AuthenticationService.swift
@@ -236,6 +236,7 @@ class AuthenticationService: NSObject {
 
         var identityServerURL: URL?
         
+        // FRROT wellknown call for identity server after server selection
         if let wellKnown = try? await wellKnown(for: homeserverURL) {
             self.wellknown = wellKnown