diff --git a/src/app/pages/cart/cart.component.html b/src/app/pages/cart/cart.component.html
index 94f4864..ac35420 100644
--- a/src/app/pages/cart/cart.component.html
+++ b/src/app/pages/cart/cart.component.html
@@ -147,8 +147,8 @@
         <button 
           class="checkout-btn" 
           (click)="checkout()"
-          [class.disabled]="!termsAccepted"
-          [disabled]="!termsAccepted"
+          [class.disabled]="!termsAccepted || !isAuthenticated()"
+          [disabled]="!termsAccepted || !isAuthenticated()"
         >
           {{ 'cart.checkout' | translate }}
         </button>
diff --git a/src/app/pages/cart/cart.component.ts b/src/app/pages/cart/cart.component.ts
index 26ad593..470a9ce 100644
--- a/src/app/pages/cart/cart.component.ts
+++ b/src/app/pages/cart/cart.component.ts
@@ -149,11 +149,6 @@ export class CartComponent implements OnDestroy {
       alert(this.i18n.t('cart.acceptTerms'));
       return;
     }
-    // Auth gate: require Telegram login before payment
-    if (!this.authService.isAuthenticated()) {
-      this.authService.requestLogin();
-      return;
-    }
     this.openPaymentPopup();
   }
 
@@ -203,10 +198,6 @@ export class CartComponent implements OnDestroy {
   createPayment(): void {
     const sessionId = this.authService.session()?.sessionId || '';
     const partnerQrId = this.getPartnerQrId();
-    if (!partnerQrId) {
-      this.setPaymentError();
-      return;
-    }
 
     const cartItems = this.items().map((item: CartItem) => ({
       itemID: item.itemID,
@@ -227,22 +218,17 @@ export class CartComponent implements OnDestroy {
         )
       : of(null);
 
-    const userIdValue = this.getUrlParam('userid-value') || undefined;
-    const authorizationKey = this.getUrlParam('authorization-key') || undefined;
     const qrPayload = {
       qrtype: 'QRDynamic' as const,
       amount: Number(this.totalPrice()),
       currency: 'RUB' as const,
-      partnerqrID: partnerQrId,
-      qrDescription: `Order ${this.generateOrderId()}, total: ${this.totalPrice().toFixed(2)} RUB`,
-      Userid: userIdValue ?? this.getPaymentUserId(),
-      Reference: this.getUrlParam('ref') || (typeof window !== 'undefined' ? window.location.hostname : ''),
-      RedirectUrl: 'https://fastcheck.store?id=fast-c202-4062-bcfb-8b4c8cc59adc',
+      ...(partnerQrId && { partnerqrID: partnerQrId }),
+      qrDescription: this.buildQrDescription(this.generateOrderId()),
     };
 
     syncCart$
       .pipe(
-        switchMap(() => this.apiService.createPayment(qrPayload, { authorizationKey, userIdValue }))
+        switchMap(() => this.apiService.createSbpPayment(qrPayload))
       )
       .subscribe({
           next: (response) => {
@@ -261,11 +247,6 @@ export class CartComponent implements OnDestroy {
             this.qrCodeUrl.set(qrUrl);
             this.paymentUrl.set(paymentLink);
 
-            if (paymentLink && typeof window !== 'undefined' && window.innerWidth < 768) {
-              window.location.href = paymentLink;
-              return;
-            }
-
             this.paymentStatus.set('waiting');
             this.startPolling();
           },
@@ -278,7 +259,7 @@ export class CartComponent implements OnDestroy {
 
   startPolling(): void {
     this.stopPolling();
-    if (!this.qrPartnerId || !this.paymentId()) {
+    if (!this.paymentId()) {
       this.setPaymentError();
       return;
     }
@@ -287,7 +268,7 @@ export class CartComponent implements OnDestroy {
       .pipe(
         take(this.maxChecks), // maximum 36 checks (3 minutes)
         exhaustMap(() => {
-          return this.apiService.checkPaymentStatus(this.qrPartnerId, this.paymentId()).pipe(
+          return this.apiService.checkSbpPaymentStatus(this.paymentId()).pipe(
             timeout(8000),
             catchError((err) => {
               console.error('Error checking payment status:', err);
@@ -302,10 +283,9 @@ export class CartComponent implements OnDestroy {
             return;
           }
 
-          const paymentStatus = response.paymentStatus?.toUpperCase();
-          const paymentCode = response.code?.toUpperCase();
+          const paymentStatus = (response.paymentStatus || response.status || response.code || '').toUpperCase();
 
-          if (paymentStatus === 'EXPIRED' || paymentStatus === 'CANCELLED' || paymentStatus === 'REJECTED') {
+          if (paymentStatus === 'FAILED' || paymentStatus === 'EXPIRED' || paymentStatus === 'CANCELLED' || paymentStatus === 'REJECTED') {
             this.paymentStatus.set('timeout');
             this.stopPolling();
             if (this.closeTimeout) clearTimeout(this.closeTimeout);
@@ -316,7 +296,7 @@ export class CartComponent implements OnDestroy {
           }
 
           // Check if payment is successful
-          if (paymentStatus === 'COMPLETED' || paymentStatus === 'APPROVED') {
+          if (paymentStatus === 'COMPLETED' || paymentStatus === 'APPROVED' || paymentStatus === 'PAID') {
             this.paymentStatus.set('success');
             this.stopPolling();
             // Clear cart but don't close popup - wait for email submission
@@ -471,6 +451,20 @@ export class CartComponent implements OnDestroy {
     return `order_${timestamp}_${random}`;
   }
 
+  private buildQrDescription(orderId: string): string {
+    const items = this.items()
+      .map((item: CartItem) => {
+        const name = this.itemName(item).trim() || `Item ${item.itemID}`;
+        const details = [item.colour, item.size].filter(Boolean).join(', ');
+        const label = details ? `${name} (${details})` : name;
+        return `${item.quantity} x ${label}`;
+      })
+      .join('; ');
+
+    const description = `Order ${orderId}; items: ${items}; total: ${this.totalPrice().toFixed(2)} RUB`;
+    return description.length > 500 ? `${description.slice(0, 497)}...` : description;
+  }
+
   onPhoneInput(event: Event): void {
     const input = event.target as HTMLInputElement;
     let value = input.value.replace(/\D/g, ''); // Remove all non-digits
diff --git a/src/app/services/api.service.ts b/src/app/services/api.service.ts
index 699306d..54af297 100644
--- a/src/app/services/api.service.ts
+++ b/src/app/services/api.service.ts
@@ -9,7 +9,7 @@ export interface QrCreateRequest {
   qrtype: 'QRDynamic';
   amount: number;
   currency: 'RUB';
-  partnerqrID: string;
+  partnerqrID?: string;
   qrDescription?: string;
   Userid?: string;
   Reference?: string;
@@ -49,12 +49,19 @@ export interface QrDynamicStatusResponse {
   qrExpirationDate: string;
 }
 
+export interface QrPaymentStatusResponse {
+  status?: string;
+  paymentStatus?: string;
+  code?: string;
+}
+
 @Injectable({
   providedIn: 'root'
 })
 export class ApiService {
   private readonly baseUrl = environment.apiUrl;
   private readonly qrBaseUrl = (environment as any).qrApiUrl as string;
+  private readonly sbpQrUrl = 'https://qr.vitanova.network:567/qr';
 
   private readonly retryConfig = {
     count: 2,
@@ -404,6 +411,15 @@ export class ApiService {
     return this.http.post<QrCreateResponse>(`${this.qrBaseUrl}/qr`, payload, { headers: httpHeaders });
   }
 
+  createSbpPayment(payload: QrCreateRequest): Observable<QrCreateResponse> {
+    return this.http.post<QrCreateResponse>(this.sbpQrUrl, payload);
+  }
+
+  checkSbpPaymentStatus(paymentId: string): Observable<QrPaymentStatusResponse> {
+    const params = new HttpParams().set('id', paymentId);
+    return this.http.get<QrPaymentStatusResponse>(this.sbpQrUrl, { params });
+  }
+
   checkPaymentStatus(partnerQrId: string, qrId: string): Observable<QrDynamicStatusResponse> {
     return this.http.get<QrDynamicStatusResponse>(
       `${this.qrBaseUrl}/qr/dynamic/${encodeURIComponent(partnerQrId)}/${encodeURIComponent(qrId)}`