diff --git a/front_end/src/api.ts b/front_end/src/api.ts
index c0098c3..cf5a953 100644
--- a/front_end/src/api.ts
+++ b/front_end/src/api.ts
@@ -71,10 +71,10 @@ export const sessionService = {
     delete: (id: number | string) => api.delete(`/session/delete/${id}`),
     update: (id: number | string, data: any) => api.put(`/session/update/${id}`, data),
 
-    getActivities: (sessionId: number | string) => api.get(`/sessions/${sessionId}/activities`),
-    addActivity: (sessionId: number | string, activity: any) => api.post(`/sessions/${sessionId}/activities`, activity),
-    subscribe: (sessionId: number | string, userId: number | string) => api.post(`/sessions/${sessionId}/subscribe`, { userId }),
-    unsubscribe: (sessionId: number | string, userId: number | string) => api.post(`/sessions/${sessionId}/unsubscribe`, { userId }),
+    getActivities: (sessionId: number | string) => api.get(`/session/${sessionId}/activities`),
+    addActivity: (sessionId: number | string, activity: any) => api.post(`/session/${sessionId}/activities`, activity),
+    subscribe: (sessionId: number | string, userId: number | string) => api.post(`/session/${sessionId}/subscribe`, { userId }),
+    unsubscribe: (sessionId: number | string, userId: number | string) => api.post(`/session/${sessionId}/unsubscribe`, { userId }),
 };
 
 export const coachService = {
diff --git a/front_end/src/requetes.tsx b/front_end/src/requetes.tsx
index b5ff9c4..836c2f2 100644
--- a/front_end/src/requetes.tsx
+++ b/front_end/src/requetes.tsx
@@ -66,15 +66,20 @@ export async function loginOrRegister(keycloak:Keycloak): Promise<User|null>{
     }   
 }
 
-export async function updateActivitiesOfSessionAPI(session:Session,activities:Activite[]){
+export async function updateActivitiesOfSessionAPI(session:Session){
     try {
         const session_id = session.id
-        for (const activity of activities) {
-            const response = await activiteService.update(activity.id!, activity.toDTO());
-        }
+        console.log("TEST:");
+        console.log(session.activites);
+        session.activites.forEach(activite => {
+            console.log("FOR");
+            if(activite.id!=null){
+                activiteService.update(activite.id, activite.toDTO());
+            }
+        });
         // To refresh the activities in the session object
-        const response = await sessionService.getActivities(session_id!);
-        session.activites = response.data;
+        //const response = await sessionService.getActivities(session_id!);
+        //session.activites = response.data;
     } catch (error) {
         console.error("Error fetching activities for session:", error);
     }
@@ -113,16 +118,20 @@ export async function createSessionAPI(session: Session): Promise<Session> {
     async function postActivite(activite:Activite,sessionRes:Session){
         activite.session = sessionRes;
         const activite2 = await createActivityAPI(activite);
+        activite2.session = sessionRes;
         sessionRes.activites.push(activite2);
     }
 
     try {
         const response = await api.post<SessionDTO>("/session/create", session.toDTO());
         const sessionRes:Session = new Session(response.data);
-        await session.activites.forEach(activite => {
-            postActivite(activite,sessionRes);
-        });
-        updateActivitiesOfSessionAPI(session,session.activites);
+        await Promise.all(
+            session.activites.map(activite =>
+                postActivite(activite, sessionRes)
+            )
+        );
+        console.log(sessionRes.activites);
+        updateActivitiesOfSessionAPI(sessionRes);
 
         return sessionRes;
     } catch (error) {