diff --git a/PadelClub/Data/Coredata/Persistence.swift b/PadelClub/Data/Coredata/Persistence.swift
index 26a14d2..69ba981 100644
--- a/PadelClub/Data/Coredata/Persistence.swift
+++ b/PadelClub/Data/Coredata/Persistence.swift
@@ -122,7 +122,7 @@ class PersistenceController: NSObject {
         // 1
         var index = 0
         let total = imported.count
-        let replacements: [(Character, Character)] = [("Á", "ç"), ("‡", "à"), ("Ù", "ô"), ("Ë", "è"), ("Ó", "î"), ("Î", "ë"), ("…", "É"), ("Ô", "ï"), ("È", "é"), ("«", "Ç"), ("»", "È")]
+        let replacements: [(Character, Character)] = [("Á", "ç"), ("‡", "à"), ("Ù", "ô"), ("Ë", "è"), ("Ó", "î"), ("Î", "ë"), ("…", "É"), ("Ô", "ï"), ("È", "é"), ("«", "Ç"), ("»", "È"), ("ù", "ô")]
 
 
         let replacementsCharacters = replacements
diff --git a/PadelClub/Data/Tournament.swift b/PadelClub/Data/Tournament.swift
index e2ad3f6..6cbc291 100644
--- a/PadelClub/Data/Tournament.swift
+++ b/PadelClub/Data/Tournament.swift
@@ -391,8 +391,17 @@ class Tournament : ModelObject, Storable {
         startDate
     }
     
+    func canBePublished() -> Bool {
+        switch state() {
+        case .build, .finished, .running:
+            return unsortedTeams().count > 3
+        default:
+            return false
+        }
+    }
+    
     func isTournamentPublished() -> Bool {
-        Date() >= publishedTournamentDate() || publishTournament
+        (Date() >= publishedTournamentDate() && canBePublished()) || publishTournament
     }
     
     func areTeamsPublished() -> Bool {
diff --git a/PadelClub/Views/GroupStage/GroupStageView.swift b/PadelClub/Views/GroupStage/GroupStageView.swift
index 098ad1c..8624757 100644
--- a/PadelClub/Views/GroupStage/GroupStageView.swift
+++ b/PadelClub/Views/GroupStage/GroupStageView.swift
@@ -10,6 +10,7 @@ import LeStorage
 
 struct GroupStageView: View {
     @EnvironmentObject var dataStore: DataStore
+    @Environment(Tournament.self) private var tournament
     @Bindable var groupStage: GroupStage
     @State private var confirmGroupStageStart: Bool = false
     @State private var sortingMode: GroupStageSortingMode = .auto
@@ -190,8 +191,9 @@ struct GroupStageView: View {
         Menu {
             NavigationLink {
                 GroupStageNameEditionView(groupStage: groupStage)
+                    .environment(tournament)
             } label: {
-                Label("Renommer", systemImage: "pencil")
+                Label("Modifier le nom et la taille", systemImage: "pencil")
             }
             Button("Retirer tout le monde", role: .destructive) {
                 confirmRemoveAll = true
@@ -236,9 +238,18 @@ struct GroupStageView: View {
 
 struct GroupStageNameEditionView: View {
     @Environment(\.dismiss) private var dismiss
+    @Environment(Tournament.self) private var tournament
     @EnvironmentObject var dataStore: DataStore
-    let groupStage: GroupStage
-    @State private var groupStageName: String = ""
+    @Bindable var groupStage: GroupStage
+    @State private var groupStageName: String
+    @State private var presentConfirmationButton: Bool = false
+    @State private var size: Int
+    
+    init(groupStage: GroupStage) {
+        _groupStage = Bindable(groupStage)
+        _groupStageName = .init(wrappedValue: groupStage.name ?? "")
+        _size = .init(wrappedValue: groupStage.size)
+    }
     
     var body: some View {
         Form {
@@ -246,30 +257,90 @@ struct GroupStageNameEditionView: View {
                 TextField("Nom de la poule", text: $groupStageName)
                     .keyboardType(.alphabet)
                     .frame(maxWidth: .infinity)
-                    .onAppear(perform: {
-                        groupStageName = groupStage.name ?? ""
-                    })
                     .onSubmit {
                         groupStageName = groupStageName.trimmed
-                        groupStage.name = groupStageName
-                        _save()
-                        dismiss()
+                        if groupStageName.isEmpty == false {
+                            groupStage.name = groupStageName
+                            _save()
+                            dismiss()
+                        }
                     }
             } footer: {
-                HStack {
-                    Spacer()
-                    FooterButtonView("retirer le nom") {
-                        groupStage.name = nil
-                        groupStageName = groupStage.groupStageTitle()
+                if groupStage.name != nil {
+                    HStack {
+                        Spacer()
+                        FooterButtonView("retirer le nom") {
+                            groupStage.name = nil
+                            groupStageName = ""
+                            _save()
+                        }
+                    }
+                }
+            }
+                        
+            Section {
+                LabeledContent {
+                    StepperView(count: $size, minimum: minimumSize(), maximum: maximumSize())
+                } label: {
+                    Text("Taille de la poule")
+                }
+                
+                if presentConfirmationButton {
+                    RowButtonView("Confirmer", role: .destructive, confirmationMessage: "Tous les matchs et les équipes de cette poule seront ré-initialisés") {
+                        let teams = groupStage.teams()
+                        teams.forEach { team in
+                            team.groupStagePosition = nil
+                            team.groupStage = nil
+                            groupStage._matches().forEach({ $0.updateTeamScores() })
+                        }
+                        do {
+                            try dataStore.teamRegistrations.addOrUpdate(contentOfs: teams)
+                        } catch {
+                            Logger.error(error)
+                        }
+                        groupStage.size = size
+                        groupStage.buildMatches()
+                        tournament.shouldVerifyGroupStage = true
                         _save()
+                        presentConfirmationButton = false
                     }
                 }
+            } footer: {
+                Text("Vous ne pouvez réduire la taille qu'à partir de la dernière poule et augmentez la taille qu'à partir de la première poule. Une poule ne peut pas avoir moins de 3 équipes et plus d'une équipe de différence par rapport aux autres poules.")
             }
+            
+        }
+        .onChange(of: size) {
+            presentConfirmationButton = true
         }
         .navigationTitle(groupStage.groupStageTitle())
         .toolbarBackground(.visible, for: .navigationBar)
     }
     
+    private func maximumSize() -> Int {
+        if groupStage.index == 0 {
+            return tournament.teamsPerGroupStage + 1
+        }
+        
+        if let previousGroupStage = tournament.groupStages().first(where: { $0.index == groupStage.index - 1 }), previousGroupStage.size > groupStage.size {
+            return tournament.teamsPerGroupStage + 1
+        }
+        
+        return tournament.teamsPerGroupStage
+    }
+
+    private func minimumSize() -> Int {
+        if groupStage.index == tournament.groupStageCount - 1 {
+            return max(3, tournament.teamsPerGroupStage - 1)
+        }
+        
+        if let nextGroupStage = tournament.groupStages().first(where: { $0.index == groupStage.index + 1 }), nextGroupStage.size < groupStage.size {
+            return max(3, tournament.teamsPerGroupStage - 1)
+        }
+        
+        return tournament.teamsPerGroupStage
+    }
+
     private func _save() {
         do {
             try dataStore.groupStages.addOrUpdate(instance: groupStage)
diff --git a/PadelClub/Views/Navigation/Umpire/UmpireView.swift b/PadelClub/Views/Navigation/Umpire/UmpireView.swift
index 236cd49..21def8b 100644
--- a/PadelClub/Views/Navigation/Umpire/UmpireView.swift
+++ b/PadelClub/Views/Navigation/Umpire/UmpireView.swift
@@ -54,6 +54,9 @@ struct UmpireView: View {
                         AccountView(user: dataStore.user) {  }
                     } label: {
                         AccountRowView(userName: dataStore.user.username)
+                        if dataStore.user.email.isEmpty == false {
+                            Text(dataStore.user.email)
+                        }
                     }
                 } else {
                     NavigationLink {
diff --git a/PadelClub/Views/Tournament/Screen/BroadcastView.swift b/PadelClub/Views/Tournament/Screen/BroadcastView.swift
index 9ecb6c6..3542a95 100644
--- a/PadelClub/Views/Tournament/Screen/BroadcastView.swift
+++ b/PadelClub/Views/Tournament/Screen/BroadcastView.swift
@@ -96,10 +96,14 @@ struct BroadcastView: View {
                             Text("Publication prévue")
                         }
                     }
+                    
+                    if tournament.canBePublished() == false {
+                        Text("Pour être visible automatiquement, le tournoi doit avoir été créé il y a 24h, avoir une structure et au moins 4 inscriptions.")
+                    }
                 } header: {
                     Text("Information sur le tournoi")
                 } footer: {
-                    if Date() < tournament.publishedTournamentDate() {
+                    if Date() < tournament.publishedTournamentDate() || tournament.canBePublished() == false {
                         HStack {
                             Spacer()
                             FooterButtonView(tournament.publishTournament ? "masquer sur le site" : "publier maintenant") {
diff --git a/PadelClub/Views/User/UserCreationView.swift b/PadelClub/Views/User/UserCreationView.swift
index 0dfdb7c..a83cf0a 100644
--- a/PadelClub/Views/User/UserCreationView.swift
+++ b/PadelClub/Views/User/UserCreationView.swift
@@ -10,9 +10,13 @@ import LeStorage
 
 struct UserCreationFormView: View {
     
+    @EnvironmentObject var networkMonitor: NetworkMonitor
+
     @Binding var isPresented: Bool
     @Binding var showEmailValidationMessage: Bool
 
+//    @Binding var showLoginScreen: Bool
+
     @State var username: String = ""
     @State var password1: String = ""
     @State var password2: String = ""
@@ -64,15 +68,21 @@ struct UserCreationFormView: View {
                         .autocorrectionDisabled()
                     TextField("Téléphone", text: self.$phone)
                         .autocorrectionDisabled()
-                    Picker("Pays", selection: $selectedCountryIndex) {
-                        ForEach(0..<self.countries.count, id: \.self) { index in
-                            Text(self.countries[index]).tag(index)
+                    
+                    LabeledContent {
+                        Picker(selection: $selectedCountryIndex) {
+                            ForEach(0..<self.countries.count, id: \.self) { index in
+                                Text(self.countries[index]).tag(index)
+                            }
+                        } label: {
+                            
                         }
+                    } label: {
+                        Text("Pays")
                     }
-                    .pickerStyle(DefaultPickerStyle())
-                    .padding()
+
                 }
-                
+
                 Section {
                     Toggle(isOn: self.$dataCollectAuthorized) {
                         Text("J'autorise XLR Sport, éditeur de Padel Club, à sauvegarder les données ci-dessus. XLR Sport s'engage à ne pas partager ces données.").font(.footnote)
@@ -80,16 +90,10 @@ struct UserCreationFormView: View {
                 }
                 
                 Section {
-                    Button(action: {
-                        self._create()
-                    }, label: {
-                        if self.isLoading {
-                            ProgressView()
-                        } else {
-                            Text("Créer")
-                        }
-                    }).disabled(!self.dataCollectAuthorized)
-                        .frame(maxWidth: .infinity)
+                    RowButtonView("Créer votre compte") {
+                        await self._create()
+                    }
+                    .disabled(!self.dataCollectAuthorized)
                 }
             }.navigationTitle("Créez votre compte")
         }
@@ -109,8 +113,12 @@ struct UserCreationFormView: View {
         self.selectedCountryIndex = self.countries.firstIndex(of: country) ?? 0
     }
     
-    fileprivate func _create() {
-
+    fileprivate func _create() async {
+        guard networkMonitor.connected == true else {
+            self.alertMessage = "L'appareil n'est pas connecté à internet."
+            return
+        }
+        
         self.isLoading = true
         self.username = self.username.trimmed
         self.firstName = self.firstName.trimmed
@@ -142,31 +150,30 @@ struct UserCreationFormView: View {
             return
         }
         
-        Task {
-            do {
-                let userCreationForm = UserCreationForm(
-                    user: DataStore.shared.user, // local user
-                    username: self.username,
-                    password: self.password1,
-                    firstName: self.firstName,
-                    lastName: self.lastName,
-                    email: self.email,
-                    phone: self.phone,
-                    country: self.countries[self.selectedCountryIndex])
-                
-                let service = try Store.main.service()
-                let _: User = try await service.createAccount(user: userCreationForm)
-                
-                DispatchQueue.main.async {
-                    self.isLoading = false
-                    self.showEmailValidationMessage = true
-                    self.isPresented = false
-                }
-                
-            } catch {
+        do {
+            let userCreationForm = UserCreationForm(
+                user: DataStore.shared.user, // local user
+                username: self.username,
+                password: self.password1,
+                firstName: self.firstName,
+                lastName: self.lastName,
+                email: self.email,
+                phone: self.phone,
+                country: self.countries[self.selectedCountryIndex])
+            
+            let service = try Store.main.service()
+            let _: User = try await service.createAccount(user: userCreationForm)
+            
+            DispatchQueue.main.async {
                 self.isLoading = false
-                Logger.error(error)
+                self.showEmailValidationMessage = true
+                self.isPresented = false
             }
+            
+        } catch {
+            self.isLoading = false
+            self.alertMessage = error.localizedDescription
+            Logger.error(error)
         }
     }