diff --git a/proxy.conf.json b/proxy.conf.json
index fcdce66..26f4cf2 100644
--- a/proxy.conf.json
+++ b/proxy.conf.json
@@ -19,5 +19,12 @@
     "changeOrigin": true,
     "pathRewrite": { "^/proxy/api-vitanova": "" },
     "logLevel": "debug"
+  },
+  "/proxy/users-vitanova": {
+    "target": "https://users.vitanova.network:456",
+    "secure": true,
+    "changeOrigin": true,
+    "pathRewrite": { "^/proxy/users-vitanova": "" },
+    "logLevel": "debug"
   }
 }
diff --git a/src/app/api.ts b/src/app/api.ts
index 7d4cc78..94a5220 100644
--- a/src/app/api.ts
+++ b/src/app/api.ts
@@ -10,6 +10,14 @@ export const FASTCHECK_API = isDevMode()
   ? '/proxy/fastcheck-store/api'
   : 'https://fastcheck.store/api';
 
+/**
+ * Base URL for Telegram/websession authorization.
+ * Auth routes: POST /users/sessions, GET/DELETE /users/sessions/:webSessionID.
+ */
+export const USERS_VITANOVA_API = isDevMode()
+  ? '/proxy/users-vitanova'
+  : 'https://users.vitanova.network:456';
+
 /**
  * Base URL for the QR/SBP backend (qr.vitanova.network).
  * Used for the /api/settings endpoint that may return active check data on load.
diff --git a/src/app/auth-dialog/auth-dialog.html b/src/app/auth-dialog/auth-dialog.html
index 56ed28c..f8f4203 100644
--- a/src/app/auth-dialog/auth-dialog.html
+++ b/src/app/auth-dialog/auth-dialog.html
@@ -30,6 +30,10 @@
             {{ 'auth.telegram_btn' | translate }}
           </button>
 
+          <a class="telegram-link" [href]="telegramLink()" target="_blank" rel="noopener">
+            {{ telegramLink() }}
+          </a>
+
           <div class="qr-section">
             <p class="qr-hint">{{ 'auth.qr_hint' | translate }}</p>
 
diff --git a/src/app/auth-dialog/auth-dialog.scss b/src/app/auth-dialog/auth-dialog.scss
index 578eeb8..002dbda 100644
--- a/src/app/auth-dialog/auth-dialog.scss
+++ b/src/app/auth-dialog/auth-dialog.scss
@@ -118,6 +118,20 @@ h2 {
   flex-shrink: 0;
 }
 
+.telegram-link {
+  display: block;
+  margin-top: 10px;
+  color: var(--telegram-hover);
+  font-size: 12px;
+  line-height: 1.4;
+  overflow-wrap: anywhere;
+  text-decoration: none;
+}
+
+.telegram-link:hover {
+  text-decoration: underline;
+}
+
 .qr-section {
   margin-top: 20px;
 }
diff --git a/src/app/auth-dialog/auth-dialog.ts b/src/app/auth-dialog/auth-dialog.ts
index 735819b..ad40147 100644
--- a/src/app/auth-dialog/auth-dialog.ts
+++ b/src/app/auth-dialog/auth-dialog.ts
@@ -1,14 +1,20 @@
 import { HttpClient } from '@angular/common/http';
 import { Component, computed, effect, inject, input, output, signal } from '@angular/core';
-import { FASTCHECK_API } from '../api';
+import { USERS_VITANOVA_API } from '../api';
 import { TranslatePipe } from '../translate/translate.pipe';
 
 interface WebSessionResponse {
-  sessionId: string;
-  userId: string;
-  expires: string;
-  userSessionId: string;
-  Status: boolean;
+  sessionId?: string;
+  webSessionID?: string;
+  webSessionId?: string;
+  userId?: string;
+  userID?: string;
+  telegramID?: string;
+  expires?: string;
+  userSessionId?: string;
+  userSessionID?: string;
+  Status?: boolean;
+  status?: boolean | string;
 }
 
 export type AuthDialogMode = 'payment' | 'login' | 'new';
@@ -31,7 +37,6 @@ export class AuthDialogComponent {
   private readonly http = inject(HttpClient);
   private readonly telegramBot = 'myAMLKYCBOT';
   private readonly sessionStorageKey = 'fc_session';
-  private readonly maxPollAttempts = 100;
 
   open = input(false);
   mode = input<AuthDialogMode>('login');
@@ -61,7 +66,6 @@ export class AuthDialogComponent {
   }
 
   private pollHandle: ReturnType<typeof setInterval> | null = null;
-  private pollAttempts = 0;
   private wasOpen = false;
   private authenticated = false;
 
@@ -106,7 +110,6 @@ export class AuthDialogComponent {
   private startAuthFlow(): void {
     this.stopPolling();
     this.authenticated = false;
-    this.pollAttempts = 0;
     this.messageKey.set('');
     this.webSessionId.set('');
     this.state.set('checking');
@@ -121,9 +124,9 @@ export class AuthDialogComponent {
   }
 
   private checkExistingSession(sessionId: string): void {
-    this.http.get<WebSessionResponse>(`${FASTCHECK_API}/websession/${sessionId}`).subscribe({
+    this.http.get<WebSessionResponse>(`${USERS_VITANOVA_API}/users/sessions/${sessionId}`).subscribe({
       next: (response) => {
-        if (response?.Status) {
+        if (this.isAuthorized(response)) {
           this.webSessionId.set(sessionId);
           this.handleAuthorized(response, sessionId);
           return;
@@ -141,26 +144,30 @@ export class AuthDialogComponent {
 
   private createSession(): void {
     this.state.set('loading');
-    this.http.get<WebSessionResponse>(`${FASTCHECK_API}/websession`).subscribe({
+    const sessionId = this.createGuid();
+    this.webSessionId.set(sessionId);
+
+    this.http.post<WebSessionResponse>(`${USERS_VITANOVA_API}/users/sessions`, {
+      webSessionID: sessionId,
+      sessionId
+    }).subscribe({
       next: (response) => {
-        const sessionId = response?.sessionId ?? '';
-        if (!sessionId) {
+        const responseSessionId = this.getSessionId(response) || sessionId;
+        if (!responseSessionId) {
           this.messageKey.set('auth.session_failed');
           this.state.set('error');
           return;
         }
 
-        this.webSessionId.set(sessionId);
+        this.webSessionId.set(responseSessionId);
 
-        if (this.isMobile) {
-          this.state.set('checking');
-          window.location.href = this.telegramLink();
-          this.startPolling(sessionId);
+        if (this.isAuthorized(response)) {
+          this.handleAuthorized(response, responseSessionId);
           return;
         }
 
         this.state.set('ready');
-        this.startPolling(sessionId);
+        this.startPolling(responseSessionId);
       },
       error: () => {
         this.messageKey.set('auth.session_failed');
@@ -171,19 +178,10 @@ export class AuthDialogComponent {
 
   private startPolling(sessionId: string): void {
     this.stopPolling();
-    this.pollAttempts = 0;
     this.pollHandle = setInterval(() => {
-      this.pollAttempts += 1;
-      if (this.pollAttempts >= this.maxPollAttempts) {
-        this.stopPolling();
-        this.messageKey.set('auth.expired');
-        this.state.set('expired');
-        return;
-      }
-
-      this.http.get<WebSessionResponse>(`${FASTCHECK_API}/websession/${sessionId}`).subscribe({
+      this.http.get<WebSessionResponse>(`${USERS_VITANOVA_API}/users/sessions/${sessionId}`).subscribe({
         next: (response) => {
-          if (!response?.Status) return;
+          if (!this.isAuthorized(response)) return;
           this.handleAuthorized(response, sessionId);
         },
         error: () => undefined
@@ -200,8 +198,8 @@ export class AuthDialogComponent {
     this.state.set('checking');
     this.authorized.emit({
       sessionId,
-      userId: response.userId ?? '',
-      userSessionId: response.userSessionId ?? ''
+      userId: response.userId ?? response.userID ?? response.telegramID ?? '',
+      userSessionId: response.userSessionId ?? response.userSessionID ?? ''
     });
   }
 
@@ -212,7 +210,6 @@ export class AuthDialogComponent {
     this.webSessionId.set('');
     this.state.set('loading');
     this.authenticated = false;
-    this.pollAttempts = 0;
   }
 
   private cleanupSession(persistSession: boolean): void {
@@ -232,14 +229,33 @@ export class AuthDialogComponent {
     }
 
     this.http
-      .request('DELETE', `${FASTCHECK_API}/websession/${sessionId}`, {
-        body: { sessionId }
-      })
+      .delete(`${USERS_VITANOVA_API}/users/sessions/${sessionId}`)
       .subscribe({ error: () => undefined });
 
     localStorage.removeItem(this.sessionStorageKey);
   }
 
+  private getSessionId(response: WebSessionResponse | null | undefined): string {
+    return response?.webSessionID ?? response?.webSessionId ?? response?.sessionId ?? '';
+  }
+
+  private isAuthorized(response: WebSessionResponse | null | undefined): boolean {
+    const status = response?.Status ?? response?.status;
+    return status === true || String(status).toLowerCase() === 'true';
+  }
+
+  private createGuid(): string {
+    if (typeof crypto !== 'undefined' && 'randomUUID' in crypto) {
+      return crypto.randomUUID();
+    }
+
+    return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, (char) => {
+      const randomValue = Math.floor(Math.random() * 16);
+      const value = char === 'x' ? randomValue : (randomValue & 0x3) | 0x8;
+      return value.toString(16);
+    });
+  }
+
   private stopPolling(): void {
     if (this.pollHandle === null) return;
     clearInterval(this.pollHandle);