diff --git a/README.md b/README.md
index f5cb751..cc89889 100644
--- a/README.md
+++ b/README.md
@@ -53,7 +53,8 @@ docker pull ghcr.io/bedolaga-dev/bedolaga-cabinet:latest
 ```bash
 # Создать временный контейнер и скопировать статику
 docker create --name tmp_cabinet ghcr.io/bedolaga-dev/bedolaga-cabinet:latest
-docker cp tmp_cabinet:/usr/share/nginx/html ./cabinet-dist
+mkdir -p ./cabinet-dist
+docker cp tmp_cabinet:/usr/share/nginx/html/. ./cabinet-dist/
 docker rm tmp_cabinet
 ```
 
@@ -77,10 +78,11 @@ VITE_APP_LOGO=V
 Соберите и извлеките:
 
 ```bash
-docker compose build
-docker create --name tmp_cabinet cabinet_frontend
-docker cp tmp_cabinet:/usr/share/nginx/html ./cabinet-dist
-docker rm tmp_cabinet
+docker compose build cabinet-frontend
+docker compose create cabinet-frontend
+mkdir -p ./cabinet-dist
+docker cp cabinet_frontend:/usr/share/nginx/html/. ./cabinet-dist/
+docker compose rm -sf cabinet-frontend
 ```
 
 ### Шаг 3. Размещение файлов на сервере
diff --git a/src/api/subscription.ts b/src/api/subscription.ts
index 529e934..2af14bf 100644
--- a/src/api/subscription.ts
+++ b/src/api/subscription.ts
@@ -449,6 +449,9 @@ export const subscriptionApi = {
     display_link: string | null;
     happ_redirect_link: string | null;
     happ_scheme_link: string | null;
+    happ_cryptolink?: string | null;
+    happ_crypto_link?: string | null;
+    happ_link?: string | null;
     connect_mode: string;
     hide_link: boolean;
     instructions: {
diff --git a/src/pages/AdminPromoGroupCreate.tsx b/src/pages/AdminPromoGroupCreate.tsx
index a9ee620..11d7416 100644
--- a/src/pages/AdminPromoGroupCreate.tsx
+++ b/src/pages/AdminPromoGroupCreate.tsx
@@ -135,7 +135,7 @@ export default function AdminPromoGroupCreate() {
     periodDiscounts.forEach((pd) => {
       const days = pd.days === '' ? 0 : pd.days;
       const percent = pd.percent === '' ? 0 : pd.percent;
-      if (days > 0 && percent > 0) {
+      if (days > 0 && percent >= 0) {
         periodDiscountsRecord[days] = percent;
       }
     });
@@ -150,8 +150,7 @@ export default function AdminPromoGroupCreate() {
       server_discount_percent: serverVal,
       traffic_discount_percent: trafficVal,
       device_discount_percent: deviceVal,
-      period_discounts:
-        Object.keys(periodDiscountsRecord).length > 0 ? periodDiscountsRecord : undefined,
+      period_discounts: periodDiscountsRecord,
       apply_discounts_to_addons: applyToAddons,
       auto_assign_total_spent_kopeks: autoAssignVal > 0 ? Math.round(autoAssignVal * 100) : 0,
       is_default: isDefault,
diff --git a/src/pages/Connection.tsx b/src/pages/Connection.tsx
index d22e5f4..a36c049 100644
--- a/src/pages/Connection.tsx
+++ b/src/pages/Connection.tsx
@@ -7,6 +7,7 @@ import { subscriptionApi } from '../api/subscription';
 import { useTelegramSDK } from '../hooks/useTelegramSDK';
 import { useHaptic } from '@/platform';
 import { resolveTemplate, hasTemplates } from '../utils/templateEngine';
+import { isHappCryptolinkMode, resolveConnectionUrlForUi } from '../utils/connectionLink';
 import { useAuthStore } from '../store/auth';
 import type { AppConfig, RemnawavePlatformData } from '../types';
 import InstallationGuide from '../components/connection/InstallationGuide';
@@ -32,21 +33,59 @@ export default function Connection() {
     queryKey: ['appConfig', subId],
     queryFn: () => subscriptionApi.getAppConfig(subId),
   });
+  const { data: connectionLink, isLoading: isConnectionLinkLoading } = useQuery({
+    queryKey: ['connectionLink', subId],
+    queryFn: () => subscriptionApi.getConnectionLink(subId),
+    retry: false,
+    staleTime: 0,
+  });
+
+  const qrConnectionUrl = useMemo(
+    () =>
+      resolveConnectionUrlForUi({
+        mode: connectionLink?.connect_mode,
+        happSchemeLink: connectionLink?.happ_scheme_link,
+        displayLink: connectionLink?.display_link,
+        subscriptionUrl: connectionLink?.subscription_url,
+        happCryptLink: connectionLink?.happ_cryptolink,
+        happCryptoLink: connectionLink?.happ_crypto_link,
+        happLink: connectionLink?.happ_link,
+        fallbackUrl: appConfig?.subscriptionUrl,
+      }),
+    [
+      appConfig?.subscriptionUrl,
+      connectionLink?.connect_mode,
+      connectionLink?.display_link,
+      connectionLink?.happ_cryptolink,
+      connectionLink?.happ_crypto_link,
+      connectionLink?.happ_link,
+      connectionLink?.happ_scheme_link,
+      connectionLink?.subscription_url,
+    ],
+  );
 
   const handleGoBack = useCallback(() => {
     navigate(-1);
   }, [navigate]);
 
   const handleOpenQR = useCallback(() => {
+    if (!qrConnectionUrl) return;
     navigate('/connection/qr', {
       replace: !isTelegramWebApp,
       state: {
-        url: appConfig?.subscriptionUrl,
-        hideLink: appConfig?.hideLink ?? false,
+        url: qrConnectionUrl,
+        hideLink: connectionLink?.hide_link ?? appConfig?.hideLink ?? false,
         subscriptionId: subId,
       },
     });
-  }, [navigate, appConfig?.subscriptionUrl, appConfig?.hideLink, isTelegramWebApp, subId]);
+  }, [
+    navigate,
+    qrConnectionUrl,
+    connectionLink?.hide_link,
+    appConfig?.hideLink,
+    isTelegramWebApp,
+    subId,
+  ]);
 
   useEffect(() => {
     const handleKeyDown = (e: KeyboardEvent) => {
@@ -73,24 +112,30 @@ export default function Connection() {
   const openDeepLink = useCallback(
     (deepLink: string) => {
       let resolved = deepLink;
-      if (hasTemplates(resolved)) {
+      if (isHappCryptolinkMode(connectionLink?.connect_mode) && qrConnectionUrl) {
+        // In HAPP cryptolink mode always open the resolved happ://crypt... URL.
+        resolved = qrConnectionUrl;
+      } else if (hasTemplates(resolved)) {
         resolved = resolveUrl(resolved);
       }
-
-      const finalUrl = `${window.location.origin}/miniapp/redirect.html?url=${encodeURIComponent(resolved)}&lang=${i18n.language || 'en'}`;
+      const isHttpUrl = /^https?:\/\//i.test(resolved);
+      const finalUrlForTelegram = isHttpUrl
+        ? resolved
+        : `${window.location.origin}/miniapp/redirect.html?url=${encodeURIComponent(resolved)}&lang=${i18n.language || 'en'}`;
 
       if (isTelegramWebApp) {
         try {
-          sdkOpenLink(finalUrl, { tryInstantView: false });
+          sdkOpenLink(finalUrlForTelegram, { tryInstantView: false });
           return;
         } catch {
           // SDK not available, fallback
         }
       }
 
-      window.location.href = finalUrl;
+      // In regular browsers open deeplink directly (without intermediate redirect page).
+      window.location.href = resolved;
     },
-    [isTelegramWebApp, i18n.language, resolveUrl],
+    [isTelegramWebApp, i18n.language, resolveUrl, connectionLink?.connect_mode, qrConnectionUrl],
   );
 
   // Check if any platform has configured apps
@@ -101,7 +146,7 @@ export default function Connection() {
     );
   }, [appConfig?.platforms]);
 
-  if (isLoading) {
+  if (isLoading || isConnectionLinkLoading) {
     return (
       <div className="flex flex-1 items-center justify-center py-20">
         <div className="h-10 w-10 animate-spin rounded-full border-[3px] border-accent-500/30 border-t-accent-500" />
diff --git a/src/pages/Subscription.tsx b/src/pages/Subscription.tsx
index 9f3a14e..e8ffbeb 100644
--- a/src/pages/Subscription.tsx
+++ b/src/pages/Subscription.tsx
@@ -1,4 +1,4 @@
-import { useState, useEffect, useRef, useCallback, memo } from 'react';
+import { useState, useEffect, useRef, useCallback, useMemo, memo } from 'react';
 import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
 import { useTranslation } from 'react-i18next';
 import { Navigate, useNavigate, useParams } from 'react-router';
@@ -18,6 +18,7 @@ import { useCloseOnSuccessNotification } from '../store/successNotification';
 import PurchaseCTAButton from '../components/subscription/PurchaseCTAButton';
 import { CopyIcon, CheckIcon } from '../components/icons';
 import { useHaptic } from '../platform';
+import { resolveConnectionUrlForUi } from '../utils/connectionLink';
 import {
   getErrorMessage,
   getInsufficientBalanceError,
@@ -221,9 +222,41 @@ export default function Subscription() {
     staleTime: 0,
     refetchOnMount: 'always',
   });
+  const { data: connectionLink, isLoading: isConnectionLinkLoading } = useQuery({
+    queryKey: ['connection-link', subscriptionId],
+    queryFn: () => subscriptionApi.getConnectionLink(subscriptionId),
+    retry: false,
+    staleTime: 0,
+  });
 
   // Extract subscription from response (null if no subscription)
   const subscription = subscriptionResponse?.subscription ?? null;
+  const displayedConnectionUrl = useMemo(
+    () =>
+      resolveConnectionUrlForUi({
+        mode: connectionLink?.connect_mode,
+        happSchemeLink: connectionLink?.happ_scheme_link,
+        displayLink: connectionLink?.display_link,
+        subscriptionUrl: connectionLink?.subscription_url,
+        happCryptLink: connectionLink?.happ_cryptolink,
+        happCryptoLink: connectionLink?.happ_crypto_link,
+        happLink: connectionLink?.happ_link,
+        fallbackUrl: isConnectionLinkLoading ? null : (subscription?.subscription_url ?? null),
+      }),
+    [
+      connectionLink?.connect_mode,
+      connectionLink?.display_link,
+      connectionLink?.happ_cryptolink,
+      connectionLink?.happ_crypto_link,
+      connectionLink?.happ_link,
+      connectionLink?.happ_scheme_link,
+      connectionLink?.subscription_url,
+      isConnectionLinkLoading,
+      subscription?.subscription_url,
+    ],
+  );
+  const shouldHideConnectionLink =
+    subscription?.hide_subscription_link || connectionLink?.hide_link;
 
   // Traffic zone (theme-aware) — called unconditionally at top level
   const usedPercent = trafficData?.traffic_used_percent ?? subscription?.traffic_used_percent ?? 0;
@@ -453,8 +486,8 @@ export default function Subscription() {
   }, [subscription, refreshTrafficMutation, subscriptionId]);
 
   const copyUrl = () => {
-    if (subscription?.subscription_url) {
-      navigator.clipboard.writeText(subscription.subscription_url);
+    if (displayedConnectionUrl) {
+      navigator.clipboard.writeText(displayedConnectionUrl);
       setCopied(true);
       setTimeout(() => setCopied(false), 2000);
     }
@@ -890,16 +923,17 @@ export default function Subscription() {
               )}
 
               {/* ─── Subscription URL ─── */}
-              {subscription.subscription_url && !subscription.hide_subscription_link && (
+              {displayedConnectionUrl && !shouldHideConnectionLink && (
                 <div className="mb-5 flex gap-2">
                   <code
-                    className="scrollbar-hide flex-1 overflow-x-auto break-all rounded-[10px] px-3 py-2 font-mono text-[11px] text-dark-50/30"
+                    className="block min-w-0 flex-1 truncate whitespace-nowrap rounded-[10px] px-3 py-2 font-mono text-[11px] text-dark-50/30"
                     style={{
                       background: g.codeBg,
                       border: `1px solid ${g.codeBorder}`,
                     }}
+                    title={displayedConnectionUrl}
                   >
-                    {subscription.subscription_url}
+                    {displayedConnectionUrl}
                   </code>
                   <button
                     onClick={copyUrl}
diff --git a/src/pages/TopUpAmount.tsx b/src/pages/TopUpAmount.tsx
index fac7ef8..0c470bf 100644
--- a/src/pages/TopUpAmount.tsx
+++ b/src/pages/TopUpAmount.tsx
@@ -10,7 +10,7 @@ import { checkRateLimit, getRateLimitResetTime, RATE_LIMIT_KEYS } from '../utils
 import { useCloseOnSuccessNotification } from '../store/successNotification';
 import { useHaptic, usePlatform } from '@/platform';
 import { staggerContainer, staggerItem } from '@/components/motion/transitions';
-import type { PaymentMethod } from '../types';
+import type { PaymentMethod, PaymentMethodOption } from '../types';
 import BentoCard from '../components/ui/BentoCard';
 import { saveTopUpPendingInfo } from '../utils/topUpStorage';
 
@@ -80,6 +80,44 @@ const getMethodIcon = (methodId: string) => {
   return <CardIcon />;
 };
 
+const getPreferredOptionId = (options?: PaymentMethod['options']) => {
+  if (!options || options.length === 0) return null;
+
+  const sbpOption = options.find((option) => {
+    const normalizedId = option.id.toLowerCase();
+    const normalizedName = option.name.toLowerCase();
+    return (
+      normalizedId.includes('sbp') ||
+      normalizedName.includes('сбп') ||
+      normalizedName.includes('sbp')
+    );
+  });
+
+  return sbpOption?.id ?? options[0].id;
+};
+
+const sortOptionsWithSbpFirst = (options?: PaymentMethod['options']) => {
+  if (!options || options.length <= 1) return options ?? [];
+
+  const isPreferredOption = (option: PaymentMethodOption) => {
+    const normalizedId = option.id.toLowerCase();
+    const normalizedName = option.name.toLowerCase();
+    return (
+      normalizedId.includes('sbp') ||
+      normalizedName.includes('сбп') ||
+      normalizedName.includes('sbp')
+    );
+  };
+
+  return [...options].sort((left, right) => {
+    const leftIsPreferred = isPreferredOption(left);
+    const rightIsPreferred = isPreferredOption(right);
+
+    if (leftIsPreferred === rightIsPreferred) return 0;
+    return leftIsPreferred ? -1 : 1;
+  });
+};
+
 export default function TopUpAmount() {
   const { t } = useTranslation();
   const navigate = useNavigate();
@@ -135,7 +173,7 @@ export default function TopUpAmount() {
   const [amount, setAmount] = useState(getInitialAmount);
   const [error, setError] = useState<string | null>(null);
   const [selectedOption, setSelectedOption] = useState<string | null>(
-    method?.options && method.options.length > 0 ? method.options[0].id : null,
+    getPreferredOptionId(method?.options),
   );
   const [paymentUrl, setPaymentUrl] = useState<string | null>(null);
   const [copied, setCopied] = useState(false);
@@ -154,6 +192,20 @@ export default function TopUpAmount() {
     }
   }, [cachedMethods, method, navigate, searchParams]);
 
+  useEffect(() => {
+    if (!method?.options || method.options.length === 0) {
+      if (selectedOption !== null) {
+        setSelectedOption(null);
+      }
+      return;
+    }
+
+    const optionExists = method.options.some((option) => option.id === selectedOption);
+    if (!optionExists) {
+      setSelectedOption(getPreferredOptionId(method.options));
+    }
+  }, [method?.id, method?.options, selectedOption]);
+
   const starsPaymentMutation = useMutation({
     mutationFn: (amountKopeks: number) => balanceApi.createStarsInvoice(amountKopeks),
     onSuccess: async (data) => {
@@ -248,6 +300,7 @@ export default function TopUpAmount() {
   }
 
   const hasOptions = method.options && method.options.length > 0;
+  const orderedOptions = sortOptionsWithSbpFirst(method.options);
   const minRubles = method.min_amount_kopeks / 100;
   const maxRubles = method.max_amount_kopeks / 100;
   const methodKey = method.id.toLowerCase().replace(/-/g, '_');
@@ -344,11 +397,11 @@ export default function TopUpAmount() {
       </motion.div>
 
       {/* Payment options (if any) */}
-      {hasOptions && method.options && (
+      {hasOptions && orderedOptions.length > 0 && (
         <motion.div variants={staggerItem} className="space-y-2">
           <label className="text-sm font-medium text-dark-400">{t('balance.paymentMethod')}</label>
           <div className="grid grid-cols-2 gap-2">
-            {method.options.map((opt) => (
+            {orderedOptions.map((opt) => (
               <button
                 key={opt.id}
                 type="button"
diff --git a/src/providers/WebSocketProvider.tsx b/src/providers/WebSocketProvider.tsx
index dd95624..82a9e4a 100644
--- a/src/providers/WebSocketProvider.tsx
+++ b/src/providers/WebSocketProvider.tsx
@@ -8,6 +8,31 @@ export type { WSMessage } from './WebSocketContext';
 
 const isDev = import.meta.env.DEV;
 
+function buildWebSocketUrl(accessToken: string): string {
+  const apiUrl = String(import.meta.env.VITE_API_URL || '/api').trim();
+  const windowWsProtocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:';
+
+  const withToken = (base: string) => `${base}?token=${encodeURIComponent(accessToken)}`;
+
+  if (apiUrl.startsWith('http://') || apiUrl.startsWith('https://')) {
+    try {
+      const api = new URL(apiUrl);
+      const wsProtocol = api.protocol === 'https:' ? 'wss:' : 'ws:';
+      const basePath = api.pathname.replace(/\/+$/, '');
+      const wsPath = basePath.endsWith('/cabinet') ? `${basePath}/ws` : `${basePath}/cabinet/ws`;
+      return withToken(`${wsProtocol}//${api.host}${wsPath}`);
+    } catch {
+      // fall through to relative-path handling
+    }
+  }
+
+  const normalizedBasePath = `/${apiUrl}`.replace(/\/{2,}/g, '/').replace(/\/+$/, '');
+  const wsPath = normalizedBasePath.endsWith('/cabinet')
+    ? `${normalizedBasePath}/ws`
+    : `${normalizedBasePath}/cabinet/ws`;
+  return withToken(`${windowWsProtocol}//${window.location.host}${wsPath}`);
+}
+
 export function WebSocketProvider({ children }: { children: React.ReactNode }) {
   const accessToken = useAuthStore((state) => state.accessToken);
   const isAuthenticated = useAuthStore((state) => state.isAuthenticated);
@@ -48,21 +73,7 @@ export function WebSocketProvider({ children }: { children: React.ReactNode }) {
 
     cleanup();
 
-    // Build WebSocket URL
-    const protocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:';
-    let host = window.location.host;
-
-    // Handle VITE_API_URL - can be absolute URL or relative path
-    const apiUrl = import.meta.env.VITE_API_URL;
-    if (apiUrl && (apiUrl.startsWith('http://') || apiUrl.startsWith('https://'))) {
-      try {
-        host = new URL(apiUrl).host;
-      } catch {
-        // If URL parsing fails, use window.location.host
-      }
-    }
-
-    const wsUrl = `${protocol}//${host}/cabinet/ws?token=${accessToken}`;
+    const wsUrl = buildWebSocketUrl(accessToken);
 
     try {
       const ws = new WebSocket(wsUrl);
diff --git a/src/utils/connectionLink.ts b/src/utils/connectionLink.ts
new file mode 100644
index 0000000..71201a5
--- /dev/null
+++ b/src/utils/connectionLink.ts
@@ -0,0 +1,67 @@
+import { createHappCryptoLink } from '@kastov/cryptohapp';
+
+export function isHappCryptolinkMode(mode: string | null | undefined): boolean {
+  const normalized = String(mode ?? '').toUpperCase();
+  if (!normalized) return false;
+  return normalized.includes('HAPP') && normalized.includes('CRYPT');
+}
+
+function isHttpUrl(url: string | null | undefined): url is string {
+  return typeof url === 'string' && /^https?:\/\//i.test(url);
+}
+
+function isHappSubscriptionLink(url: string | null | undefined): url is string {
+  return typeof url === 'string' && /^happ:\/\/sub/i.test(url);
+}
+
+function isCryptSourceUrl(url: string | null | undefined): url is string {
+  return isHttpUrl(url) || isHappSubscriptionLink(url);
+}
+
+function isHappCryptDeepLink(url: string | null | undefined): url is string {
+  return typeof url === 'string' && /^happ:\/\/crypt/i.test(url);
+}
+
+interface ResolveConnectionUrlInput {
+  mode?: string | null;
+  subscriptionUrl?: string | null;
+  displayLink?: string | null;
+  happSchemeLink?: string | null;
+  happCryptLink?: string | null;
+  happCryptoLink?: string | null;
+  happLink?: string | null;
+  fallbackUrl?: string | null;
+}
+
+export function resolveConnectionUrlForUi(input: ResolveConnectionUrlInput): string | null {
+  const defaultUrl =
+    input.fallbackUrl ?? input.subscriptionUrl ?? input.displayLink ?? input.happSchemeLink ?? null;
+
+  if (!isHappCryptolinkMode(input.mode)) return defaultUrl;
+
+  const backendCryptLink =
+    [
+      input.happCryptLink,
+      input.happCryptoLink,
+      input.happLink,
+      input.happSchemeLink,
+      input.displayLink,
+      input.subscriptionUrl,
+    ].find((value) => isHappCryptDeepLink(value)) ?? null;
+  if (backendCryptLink) return backendCryptLink;
+
+  const sourceSubscriptionUrl =
+    [input.subscriptionUrl, input.displayLink, input.fallbackUrl].find((value) =>
+      isCryptSourceUrl(value),
+    ) ?? null;
+
+  if (sourceSubscriptionUrl) {
+    return (
+      createHappCryptoLink(sourceSubscriptionUrl, 'v4', true) ??
+      createHappCryptoLink(sourceSubscriptionUrl, 'v3', true) ??
+      defaultUrl
+    );
+  }
+
+  return defaultUrl;
+}