diff --git a/PadelClub/Data/DataStore.swift b/PadelClub/Data/DataStore.swift
index 4109db9..661a5b8 100644
--- a/PadelClub/Data/DataStore.swift
+++ b/PadelClub/Data/DataStore.swift
@@ -60,6 +60,7 @@ class DataStore: ObservableObject {
     func setUser(_ user: User) {
         do {
             try self.userStorage.setItem(user)
+            Store.main.collectionsCanSynchronize = true
             self._loadCollections()
         } catch {
             Logger.error(error)
@@ -99,6 +100,11 @@ class DataStore: ObservableObject {
     
     @objc func collectionWasUpdated(notification: Notification) {
         self.objectWillChange.send()
+        
+        if let object = notification.object as? StoredObject<User> {
+            Logger.log("StoredObject<User> loaded with user = \(object.item())")
+            Store.main.collectionsCanSynchronize = object.item() != nil
+        }
     }
     
     var globalRights: UserRight {
@@ -122,6 +128,7 @@ class DataStore: ObservableObject {
     
     func disconnect() {
         Store.main.disconnect(resetAll: true)
+        Store.main.collectionsCanSynchronize = false
     }
     
     fileprivate func _loadCollections() {