diff --git a/front/src/back-api/model/album.ts b/front/src/back-api/model/album.ts
index 1f1c6e3..f4b4d4c 100644
--- a/front/src/back-api/model/album.ts
+++ b/front/src/back-api/model/album.ts
@@ -8,7 +8,7 @@ import {ZodLocalDate} from "./local-date";
 import {ZodGenericDataSoftDelete, ZodGenericDataSoftDeleteWrite } from "./generic-data-soft-delete";
 
 export const ZodAlbum = ZodGenericDataSoftDelete.extend({
-	name: zod.string().max(256).optional(),
+	name: zod.string().optional(),
 	description: zod.string().optional(),
 	/**
 	 * List of Id of the specific covers
@@ -30,7 +30,7 @@ export function isAlbum(data: any): data is Album {
 	}
 }
 export const ZodAlbumWrite = ZodGenericDataSoftDeleteWrite.extend({
-	name: zod.string().max(256).nullable().optional(),
+	name: zod.string().nullable().optional(),
 	description: zod.string().nullable().optional(),
 	/**
 	 * List of Id of the specific covers
diff --git a/front/src/back-api/model/artist.ts b/front/src/back-api/model/artist.ts
index 5e66c0a..6ac3fa9 100644
--- a/front/src/back-api/model/artist.ts
+++ b/front/src/back-api/model/artist.ts
@@ -8,14 +8,14 @@ import {ZodLocalDate} from "./local-date";
 import {ZodGenericDataSoftDelete, ZodGenericDataSoftDeleteWrite } from "./generic-data-soft-delete";
 
 export const ZodArtist = ZodGenericDataSoftDelete.extend({
-	name: zod.string().max(256).optional(),
+	name: zod.string().optional(),
 	description: zod.string().optional(),
 	/**
 	 * List of Id of the specific covers
 	 */
 	covers: zod.array(ZodObjectId).optional(),
-	firstName: zod.string().max(256).optional(),
-	surname: zod.string().max(256).optional(),
+	firstName: zod.string().optional(),
+	surname: zod.string().optional(),
 	birth: ZodLocalDate.optional(),
 	death: ZodLocalDate.optional(),
 
@@ -33,14 +33,14 @@ export function isArtist(data: any): data is Artist {
 	}
 }
 export const ZodArtistWrite = ZodGenericDataSoftDeleteWrite.extend({
-	name: zod.string().max(256).nullable().optional(),
+	name: zod.string().nullable().optional(),
 	description: zod.string().nullable().optional(),
 	/**
 	 * List of Id of the specific covers
 	 */
 	covers: zod.array(ZodObjectId).nullable().optional(),
-	firstName: zod.string().max(256).nullable().optional(),
-	surname: zod.string().max(256).nullable().optional(),
+	firstName: zod.string().nullable().optional(),
+	surname: zod.string().nullable().optional(),
 	birth: ZodLocalDate.nullable().optional(),
 	death: ZodLocalDate.nullable().optional(),
 
diff --git a/front/src/back-api/model/gender.ts b/front/src/back-api/model/gender.ts
index 1c65555..3f5ff6f 100644
--- a/front/src/back-api/model/gender.ts
+++ b/front/src/back-api/model/gender.ts
@@ -7,7 +7,7 @@ import {ZodObjectId} from "./object-id";
 import {ZodGenericDataSoftDelete, ZodGenericDataSoftDeleteWrite } from "./generic-data-soft-delete";
 
 export const ZodGender = ZodGenericDataSoftDelete.extend({
-	name: zod.string().max(256).optional(),
+	name: zod.string().optional(),
 	description: zod.string().optional(),
 	/**
 	 * List of Id of the specific covers
@@ -28,7 +28,7 @@ export function isGender(data: any): data is Gender {
 	}
 }
 export const ZodGenderWrite = ZodGenericDataSoftDeleteWrite.extend({
-	name: zod.string().max(256).nullable().optional(),
+	name: zod.string().nullable().optional(),
 	description: zod.string().nullable().optional(),
 	/**
 	 * List of Id of the specific covers
diff --git a/front/src/back-api/model/generic-data-soft-delete.ts b/front/src/back-api/model/generic-data-soft-delete.ts
index bd82d30..741eee0 100644
--- a/front/src/back-api/model/generic-data-soft-delete.ts
+++ b/front/src/back-api/model/generic-data-soft-delete.ts
@@ -24,9 +24,7 @@ export function isGenericDataSoftDelete(data: any): data is GenericDataSoftDelet
 		return false;
 	}
 }
-export const ZodGenericDataSoftDeleteWrite = ZodGenericDataWrite.extend({
-
-});
+export const ZodGenericDataSoftDeleteWrite = ZodGenericDataWrite;
 
 export type GenericDataSoftDeleteWrite = zod.infer<typeof ZodGenericDataSoftDeleteWrite>;
 
diff --git a/front/src/back-api/model/generic-data.ts b/front/src/back-api/model/generic-data.ts
index 1097e39..898b37a 100644
--- a/front/src/back-api/model/generic-data.ts
+++ b/front/src/back-api/model/generic-data.ts
@@ -25,9 +25,7 @@ export function isGenericData(data: any): data is GenericData {
 		return false;
 	}
 }
-export const ZodGenericDataWrite = ZodGenericTimingWrite.extend({
-
-});
+export const ZodGenericDataWrite = ZodGenericTimingWrite;
 
 export type GenericDataWrite = zod.infer<typeof ZodGenericDataWrite>;
 
diff --git a/front/src/back-api/model/playlist.ts b/front/src/back-api/model/playlist.ts
index 6c8287f..0b7aa4e 100644
--- a/front/src/back-api/model/playlist.ts
+++ b/front/src/back-api/model/playlist.ts
@@ -7,7 +7,7 @@ import {ZodObjectId} from "./object-id";
 import {ZodGenericDataSoftDelete, ZodGenericDataSoftDeleteWrite } from "./generic-data-soft-delete";
 
 export const ZodPlaylist = ZodGenericDataSoftDelete.extend({
-	name: zod.string().max(256).optional(),
+	name: zod.string().optional(),
 	description: zod.string().optional(),
 	/**
 	 * List of Id of the specific covers
@@ -29,7 +29,7 @@ export function isPlaylist(data: any): data is Playlist {
 	}
 }
 export const ZodPlaylistWrite = ZodGenericDataSoftDeleteWrite.extend({
-	name: zod.string().max(256).nullable().optional(),
+	name: zod.string().nullable().optional(),
 	description: zod.string().nullable().optional(),
 	/**
 	 * List of Id of the specific covers
diff --git a/front/src/back-api/model/track.ts b/front/src/back-api/model/track.ts
index 8445f2e..35b9f27 100644
--- a/front/src/back-api/model/track.ts
+++ b/front/src/back-api/model/track.ts
@@ -8,7 +8,7 @@ import {ZodLong} from "./long";
 import {ZodGenericDataSoftDelete, ZodGenericDataSoftDeleteWrite } from "./generic-data-soft-delete";
 
 export const ZodTrack = ZodGenericDataSoftDelete.extend({
-	name: zod.string().max(256).optional(),
+	name: zod.string().optional(),
 	description: zod.string().optional(),
 	/**
 	 * List of Id of the specific covers
@@ -34,7 +34,7 @@ export function isTrack(data: any): data is Track {
 	}
 }
 export const ZodTrackWrite = ZodGenericDataSoftDeleteWrite.extend({
-	name: zod.string().max(256).nullable().optional(),
+	name: zod.string().nullable().optional(),
 	description: zod.string().nullable().optional(),
 	/**
 	 * List of Id of the specific covers
diff --git a/front/src/back-api/model/user-karusic.ts b/front/src/back-api/model/user-karusic.ts
index 79ff064..646c564 100644
--- a/front/src/back-api/model/user-karusic.ts
+++ b/front/src/back-api/model/user-karusic.ts
@@ -5,9 +5,7 @@ import { z as zod } from "zod";
 
 import {ZodUser, ZodUserWrite } from "./user";
 
-export const ZodUserKarusic = ZodUser.extend({
-
-});
+export const ZodUserKarusic = ZodUser;
 
 export type UserKarusic = zod.infer<typeof ZodUserKarusic>;
 
@@ -20,9 +18,7 @@ export function isUserKarusic(data: any): data is UserKarusic {
 		return false;
 	}
 }
-export const ZodUserKarusicWrite = ZodUserWrite.extend({
-
-});
+export const ZodUserKarusicWrite = ZodUserWrite;
 
 export type UserKarusicWrite = zod.infer<typeof ZodUserKarusicWrite>;
 
diff --git a/front/src/back-api/model/user-me.ts b/front/src/back-api/model/user-me.ts
index a0a78d9..1f8a625 100644
--- a/front/src/back-api/model/user-me.ts
+++ b/front/src/back-api/model/user-me.ts
@@ -8,7 +8,7 @@ import {ZodPartRight} from "./part-right";
 
 export const ZodUserMe = zod.object({
 	id: ZodLong,
-	login: zod.string().max(255).optional(),
+	login: zod.string().optional(),
 	/**
 	 * Map<EntityName, Map<PartName, Right>>
 	 */
diff --git a/front/src/back-api/model/user.ts b/front/src/back-api/model/user.ts
index d668bc6..0fc33b8 100644
--- a/front/src/back-api/model/user.ts
+++ b/front/src/back-api/model/user.ts
@@ -10,7 +10,7 @@ import {ZodGenericDataSoftDelete, ZodGenericDataSoftDeleteWrite } from "./generi
 export const ZodUser = ZodGenericDataSoftDelete.extend({
 	login: zod.string().min(3).max(128),
 	lastConnection: ZodTimestamp.optional(),
-	blocked: zod.boolean(),
+	blocked: zod.boolean().optional(),
 	blockedReason: zod.string().max(512).optional(),
 	/**
 	 * List of Id of the specific covers
@@ -33,7 +33,7 @@ export function isUser(data: any): data is User {
 export const ZodUserWrite = ZodGenericDataSoftDeleteWrite.extend({
 	login: zod.string().min(3).max(128).optional(),
 	lastConnection: ZodTimestamp.nullable().optional(),
-	blocked: zod.boolean(),
+	blocked: zod.boolean().nullable().optional(),
 	blockedReason: zod.string().max(512).nullable().optional(),
 	/**
 	 * List of Id of the specific covers
diff --git a/front/src/components/form/FormCovers.tsx b/front/src/components/form/FormCovers.tsx
index 254efcc..4f42576 100644
--- a/front/src/components/form/FormCovers.tsx
+++ b/front/src/components/form/FormCovers.tsx
@@ -92,12 +92,12 @@ export const DragNdrop = ({
 };
 
 export type CenterIconProps = BoxProps & {
-  icon: any;
+  children: any;
   sizeIcon?: string;
 };
 
 export const CenterIcon = ({
-  icon: IconEl,
+  children,
   sizeIcon = '15px',
   ...rest
 }: CenterIconProps) => {
@@ -110,7 +110,7 @@ export const CenterIcon = ({
         top="50%"
         left="50%"
         transform="translate(-50%, -50%)"
-      >{IconEl}</Box>
+      >{children}</Box>
     </Box>
   );
 };
diff --git a/front/src/utils/sso.ts b/front/src/utils/sso.ts
index e779c36..a71af34 100644
--- a/front/src/utils/sso.ts
+++ b/front/src/utils/sso.ts
@@ -98,7 +98,7 @@ export function requestSignIn(name?: string): void {
   console.log(
     `Request sign-in: '${environment.ssoSignIn}' + '${hashLocalData(name)}'`
   );
-  window.location.href = environment.ssoSignIn + hashLocalData(name);
+  window.location.href = environment.ssoSignIn + hashLocalData(name) + "/";
 }
 /**
  * Request SSO Disconnect