diff --git a/src/locales/en.json b/src/locales/en.json
index 774cbb4..72ee6fa 100644
--- a/src/locales/en.json
+++ b/src/locales/en.json
@@ -250,6 +250,7 @@
   "dashboard": {
     "title": "Dashboard",
     "welcome": "Welcome, {{name}}!",
+    "welcomeNoName": "Welcome!",
     "yourSubscription": "Your Subscription",
     "quickActions": "Quick Actions",
     "viewSubscription": "Manage Subscription",
diff --git a/src/locales/fa.json b/src/locales/fa.json
index 518fe03..7456f3c 100644
--- a/src/locales/fa.json
+++ b/src/locales/fa.json
@@ -235,6 +235,7 @@
   "dashboard": {
     "title": "داشبورد",
     "welcome": "خوش آمدید، {{name}}!",
+    "welcomeNoName": "خوش آمدید!",
     "yourSubscription": "اشتراک شما",
     "quickActions": "دسترسی سریع",
     "viewSubscription": "مدیریت اشتراک",
diff --git a/src/locales/ru.json b/src/locales/ru.json
index 5424442..632a3b0 100644
--- a/src/locales/ru.json
+++ b/src/locales/ru.json
@@ -253,6 +253,7 @@
   "dashboard": {
     "title": "Личный кабинет",
     "welcome": "Добро пожаловать, {{name}}!",
+    "welcomeNoName": "Добро пожаловать!",
     "yourSubscription": "Ваша подписка",
     "quickActions": "Быстрые действия",
     "viewSubscription": "Управление подпиской",
diff --git a/src/locales/zh.json b/src/locales/zh.json
index d358bb2..e7c22ca 100644
--- a/src/locales/zh.json
+++ b/src/locales/zh.json
@@ -235,6 +235,7 @@
   "dashboard": {
     "title": "个人中心",
     "welcome": "欢迎，{{name}}！",
+    "welcomeNoName": "欢迎！",
     "yourSubscription": "您的订阅",
     "quickActions": "快捷操作",
     "viewSubscription": "管理订阅",
diff --git a/src/pages/Dashboard.tsx b/src/pages/Dashboard.tsx
index 0d0e254..714ad7a 100644
--- a/src/pages/Dashboard.tsx
+++ b/src/pages/Dashboard.tsx
@@ -251,12 +251,14 @@ export default function Dashboard() {
     setShowOnboarding(false);
   };
 
+  const userName = displayName(user);
+
   return (
     <div className="space-y-6">
       {/* Header */}
       <div data-onboarding="welcome">
         <h1 className="text-2xl font-bold text-dark-50 sm:text-3xl">
-          {t('dashboard.welcome', { name: displayName(user) })}
+          {userName ? t('dashboard.welcome', { name: userName }) : t('dashboard.welcomeNoName')}
         </h1>
         <div className="mt-1 flex flex-wrap items-center gap-2">
           <p className="text-dark-400">{t('dashboard.yourSubscription')}</p>
@@ -328,40 +330,37 @@ export default function Dashboard() {
       )}
 
       {/* Subscription Status Card — hidden in multi-tariff (managed via /subscriptions) */}
-      {!isMultiTariff && (
-        <>
-          {subLoading ? (
-            <div className="bento-card">
-              <div className="mb-4 flex items-center justify-between">
-                <div className="skeleton h-5 w-20" />
-                <div className="skeleton h-6 w-16 rounded-full" />
-              </div>
-              <div className="skeleton mb-3 h-10 w-32" />
-              <div className="skeleton mb-3 h-4 w-40" />
-              <div className="skeleton h-3 w-full rounded-full" />
-              <div className="mt-5">
-                <div className="skeleton h-12 w-full rounded-xl" />
-              </div>
+      {!isMultiTariff &&
+        (subLoading ? (
+          <div className="bento-card">
+            <div className="mb-4 flex items-center justify-between">
+              <div className="skeleton h-5 w-20" />
+              <div className="skeleton h-6 w-16 rounded-full" />
             </div>
-          ) : subscription?.is_expired ||
-            subscription?.status === 'disabled' ||
-            subscription?.is_limited ? (
-            <SubscriptionCardExpired
-              subscription={subscription}
-              balanceKopeks={balanceData?.balance_kopeks ?? 0}
-              balanceRubles={balanceData?.balance_rubles ?? 0}
-            />
-          ) : subscription ? (
-            <SubscriptionCardActive
-              subscription={subscription}
-              trafficData={trafficData}
-              refreshTrafficMutation={refreshTrafficMutation}
-              trafficRefreshCooldown={trafficRefreshCooldown}
-              connectedDevices={devicesData?.total ?? 0}
-            />
-          ) : null}
-        </>
-      )}
+            <div className="skeleton mb-3 h-10 w-32" />
+            <div className="skeleton mb-3 h-4 w-40" />
+            <div className="skeleton h-3 w-full rounded-full" />
+            <div className="mt-5">
+              <div className="skeleton h-12 w-full rounded-xl" />
+            </div>
+          </div>
+        ) : subscription?.is_expired ||
+          subscription?.status === 'disabled' ||
+          subscription?.is_limited ? (
+          <SubscriptionCardExpired
+            subscription={subscription}
+            balanceKopeks={balanceData?.balance_kopeks ?? 0}
+            balanceRubles={balanceData?.balance_rubles ?? 0}
+          />
+        ) : subscription ? (
+          <SubscriptionCardActive
+            subscription={subscription}
+            trafficData={trafficData}
+            refreshTrafficMutation={refreshTrafficMutation}
+            trafficRefreshCooldown={trafficRefreshCooldown}
+            connectedDevices={devicesData?.total ?? 0}
+          />
+        ) : null)}
 
       {/* Нет подписок: показываем триал (если доступен) и ВСЕГДА одну явную
           кнопку покупки. Триал не обязателен, чтобы попасть в витрину — раньше
diff --git a/src/utils/displayName.test.ts b/src/utils/displayName.test.ts
new file mode 100644
index 0000000..00ea739
--- /dev/null
+++ b/src/utils/displayName.test.ts
@@ -0,0 +1,51 @@
+import { describe, expect, it } from 'vitest';
+import { displayName } from './displayName';
+
+describe('displayName', () => {
+  it('returns empty string for missing user', () => {
+    expect(displayName(undefined)).toBe('');
+    expect(displayName(null)).toBe('');
+  });
+
+  it('combines first_name and last_name', () => {
+    expect(displayName({ first_name: 'Иван', last_name: 'Петров' })).toBe('Иван Петров');
+    expect(displayName({ first_name: 'Иван', last_name: null })).toBe('Иван');
+    expect(displayName({ first_name: null, last_name: 'Петров' })).toBe('Петров');
+  });
+
+  it('falls back to username when there is no name', () => {
+    expect(displayName({ first_name: null, last_name: null, username: 'ivan' })).toBe('ivan');
+  });
+
+  it('falls back to telegram_id when there is no name and no username', () => {
+    expect(displayName({ first_name: null, username: null, telegram_id: 123456 })).toBe('#123456');
+  });
+
+  it('falls back to the email local part for email-only users', () => {
+    expect(
+      displayName({
+        first_name: null,
+        last_name: null,
+        username: null,
+        telegram_id: null,
+        email: 'vasya@gmail.com',
+      }),
+    ).toBe('vasya');
+  });
+
+  it('prefers telegram_id over email', () => {
+    expect(displayName({ telegram_id: 123456, email: 'vasya@gmail.com' })).toBe('#123456');
+  });
+
+  it('returns empty string when every source is empty', () => {
+    expect(
+      displayName({
+        first_name: '  ',
+        last_name: null,
+        username: null,
+        telegram_id: null,
+        email: null,
+      }),
+    ).toBe('');
+  });
+});
diff --git a/src/utils/displayName.ts b/src/utils/displayName.ts
index d79412f..c7c62ab 100644
--- a/src/utils/displayName.ts
+++ b/src/utils/displayName.ts
@@ -3,21 +3,28 @@
  *
  * Why: single-letter first_name (e.g., "О") looked confusing alone ("Добро пожаловать, О!").
  * Combining with last_name makes truncated/short first names readable.
+ *
+ * Email/OAuth registration does not collect a name, so for such users every
+ * Telegram-derived field is null — fall back to the email local part
+ * ("vasya@gmail.com" → "vasya") to avoid an empty name in greetings.
  */
 export interface NameSource {
   first_name?: string | null;
   last_name?: string | null;
   username?: string | null;
   telegram_id?: number | null;
+  email?: string | null;
 }
 
 export function displayName(user?: NameSource | null): string {
   if (!user) return '';
   const fullName = [user.first_name, user.last_name]
-    .filter((part): part is string => Boolean(part && part.trim()))
+    .filter((part): part is string => Boolean(part?.trim()))
     .join(' ');
   if (fullName) return fullName;
   if (user.username) return user.username;
   if (user.telegram_id) return `#${user.telegram_id}`;
+  const emailLocalPart = user.email?.trim().split('@')[0];
+  if (emailLocalPart) return emailLocalPart;
   return '';
 }