diff --git a/src/api/UsersApi.ts b/src/api/UsersApi.ts
index c6dc285b..5f8a328e 100644
--- a/src/api/UsersApi.ts
+++ b/src/api/UsersApi.ts
@@ -55,9 +55,9 @@ export const deleteUser = (key: string): AxiosPromise<void> =>
     API.delete(compilePath(API_PATHS.USER, { key }));
 
 export const deleteUserAwaitingApproval = (key: string): AxiosPromise<void> =>
-    API.delete(
-        API_PATHS.USERS_AWAITING_APPROVAL.concat(`?username=`).concat(key)
-    );
+    API.delete(API_PATHS.USERS_AWAITING_APPROVAL, {
+        params: { username: key },
+    });
 
 export const requestResetToken = (
     key: string
diff --git a/src/routes/users/Users.tsx b/src/routes/users/Users.tsx
index 15203d41..0e38dd9f 100644
--- a/src/routes/users/Users.tsx
+++ b/src/routes/users/Users.tsx
@@ -104,22 +104,15 @@ const Users = (): JSX.Element => {
             {isRequestAccepted && (
                 <Alert
                     status="info"
+                    variant="subtle"
                     overflow="visible"
-                    background="#C2DFFF"
-                    paddingX="4"
-                    paddingY="3"
+                    padding="var(--chakra-space-3) var(--chakra-space-4)"
                     marginBottom="10"
                 >
-                    <AlertIcon as={RiInformationLine} color="blue.900" />
-                    <Box alignItems="stretch" width="100%" background="#C2DFFF">
-                        <AlertTitle fontSize="xxs" color="blue.900">
-                            Just accepted? Let them know!
-                        </AlertTitle>
-                        <AlertDescription
-                            maxWidth="sm"
-                            fontSize="xss"
-                            color="blue.900"
-                        >
+                    <AlertIcon as={RiInformationLine} fill="blue.900" />
+                    <Box>
+                        <AlertTitle>Just accepted? Let them know!</AlertTitle>
+                        <AlertDescription lineHeight="4">
                             Some users were successfully accepted. Don't forget
                             to notify them that they now have access to Substra.
                         </AlertDescription>
diff --git a/src/routes/users/useUsersStore.tsx b/src/routes/users/useUsersStore.tsx
index 7ef31fc5..fa8c663d 100644
--- a/src/routes/users/useUsersStore.tsx
+++ b/src/routes/users/useUsersStore.tsx
@@ -207,13 +207,6 @@ const useUsersStore = create<UsersStateT>((set, get) => ({
             await deleteUserAwaitingApproval(key);
             set({
                 deletingUserAwaitingApproval: false,
-                usersAwaitingApprovalCount:
-                    get().usersAwaitingApprovalCount - 1,
-                usersAwaitingApproval: get().usersAwaitingApproval.filter(
-                    (userAwaitingApproval) =>
-                        userAwaitingApproval.username !==
-                        get().userAwaitingApproval?.username
-                ),
             });
             return null;
         } catch (error) {