diff --git a/aggregator.py b/aggregator.py
index 49182c2..1709f12 100644
--- a/aggregator.py
+++ b/aggregator.py
@@ -81,6 +81,12 @@ def clear_cache(sub_id: str = None):
         _links_cache.clear()
         _traffic_cache.clear()
 
+def get_remaining_days(user: dict) -> int:
+    end = user.get("tariff_end_at", 0)
+    if end:
+        return max(0, (end - int(time.time())) // 86400)
+    return user.get("tariff_days_remaining", 0)
+
 def load_json(path: str, default: dict) -> dict:
     if os.path.exists(path):
         try:
@@ -107,12 +113,19 @@ def init_db():
             tier TEXT DEFAULT 'free',
             tariff_days_bought INTEGER DEFAULT 0,
             tariff_days_remaining INTEGER DEFAULT 0,
+            tariff_end_at INTEGER DEFAULT 0,
             total_paid_rubles INTEGER DEFAULT 0,
             traffic_limit_gb INTEGER DEFAULT 0,
             is_active BOOLEAN DEFAULT 1,
             created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
         )
     """)
+    try:
+        conn.execute("ALTER TABLE users ADD COLUMN tariff_end_at INTEGER DEFAULT 0")
+    except:
+        pass
+    now = int(time.time())
+    conn.execute("UPDATE users SET tariff_end_at = ? + tariff_days_remaining * 86400 WHERE tariff_end_at = 0 AND tariff_days_remaining > 0", (now,))
     conn.commit()
     conn.close()
 
@@ -376,7 +389,7 @@ VALUES (?, ?, 'free', 0, 0, 0, 0, 1)
         
         user = dict(user)
         
-        if user['tier'] == 'paid' and user['tariff_days_remaining'] <= 0:
+        if user['tier'] == 'paid' and get_remaining_days(user) <= 0:
             conn.execute("UPDATE users SET tier = 'free' WHERE id = ?", (user['id'],))
             conn.commit()
             user['tier'] = 'free'
@@ -554,8 +567,9 @@ async def get_subscription(request: Request, subscription_id: str, format: str =
         lines.append(f"#support-url: {support_url}")
     
     expire_ts = 0
-    if user.get("tariff_days_remaining", 0) > 0:
-        expire_ts = int((datetime.now() + timedelta(days=user["tariff_days_remaining"])).timestamp())
+    rem_days = get_remaining_days(user)
+    if rem_days > 0:
+        expire_ts = int((datetime.now() + timedelta(days=rem_days)).timestamp())
         lines.append("#sub-expire: 1")
         if support_url:
             lines.append(f"#sub-expire-button-link: {support_url}")
@@ -624,7 +638,7 @@ async def get_web_page(subscription_id: str):
     tier_name = tier_config.get("name", "Free")
     tier_badge = f'<span class="tier-badge" style="background: {tier_color}">{tier_name}</span>'
     
-    days_remaining = user.get("tariff_days_remaining", 0)
+    days_remaining = get_remaining_days(user)
     days_info = f"<p>⏳ Осталось дней: {days_remaining}</p>" if tier == "paid" and days_remaining > 0 else ""
     
     traffic = get_cached_traffic(subscription_id)
@@ -728,14 +742,15 @@ async def webhook_donationalerts(request: Request):
     
     conn = get_db()
     try:
+        now_ts = int(time.time())
         conn.execute("""
             UPDATE users SET 
                 tier = ?,
                 tariff_days_bought = tariff_days_bought + ?,
-                tariff_days_remaining = tariff_days_remaining + ?,
+                tariff_end_at = MAX(COALESCE(tariff_end_at, 0), ?) + ? * 86400,
                 total_paid_rubles = total_paid_rubles + ?
             WHERE id = ?
-        """, (tier, days, days, amount, user["id"]))
+        """, (tier, days, now_ts, days, amount, user["id"]))
         conn.commit()
     finally:
         conn.close()
@@ -764,18 +779,19 @@ async def admin_users(request: Request):
         traffic = f'{u["traffic_limit_gb"]} GB' if u['traffic_limit_gb'] > 0 else '&#8734;'
         active = '&#10003;' if u['is_active'] else '&#10007;'
         tier_display = u['tier'].upper()
+        rem_days = get_remaining_days(u)
         users_rows += f'''<tr>
             <td>{u['id']}</td>
             <td style="font-weight:600;color:var(--text)">{u['username']}</td>
             <td><code>{u['subscription_id']}</code></td>
             <td><span class="badge badge-{u['tier']}">{tier_display}</span></td>
-            <td>{u['tariff_days_remaining']}</td>
+            <td>{rem_days}</td>
             <td>{u['total_paid_rubles']}&#8381;</td>
             <td>{traffic}</td>
             <td>{active}</td>
             <td>{u['created_at'][:10]}</td>
             <td>
-                <button class="btn-sm" onclick="editUser({u['id']}, '{u['tier']}', {u['tariff_days_remaining']}, {u['traffic_limit_gb']}, {1 if u['is_active'] else 0})">&#9997;&#65039;</button>
+                <button class="btn-sm" onclick="editUser({u['id']}, '{u['tier']}', {rem_days}, {u['traffic_limit_gb']}, {1 if u['is_active'] else 0})">&#9997;&#65039;</button>
                 <button class="btn-sm danger" onclick="deleteUser({u['id']}, '{u['username']}')">&#128465;&#65039;</button>
             </td>
         </tr>'''
@@ -1185,6 +1201,7 @@ async def update_user(request: Request, data: dict):
     user_id = int(data.get("id", 0))
     tier = str(data.get("tier", "free"))
     tariff_days_remaining = int(data.get("tariff_days_remaining", 0) or 0)
+    tariff_end_at = int(time.time()) + tariff_days_remaining * 86400 if tariff_days_remaining > 0 else 0
     traffic_limit_gb = int(data.get("traffic_limit_gb", 0) or 0)
     is_active = 1 if data.get("is_active") in [True, "true", "on", "1", 1] else 0
     
@@ -1193,9 +1210,9 @@ async def update_user(request: Request, data: dict):
     conn = get_db()
     try:
         conn.execute("""
-            UPDATE users SET tier = ?, tariff_days_remaining = ?, traffic_limit_gb = ?, is_active = ?
+            UPDATE users SET tier = ?, tariff_days_remaining = ?, tariff_end_at = ?, traffic_limit_gb = ?, is_active = ?
             WHERE id = ?
-        """, (tier, tariff_days_remaining, traffic_limit_gb, is_active, user_id))
+        """, (tier, tariff_days_remaining, tariff_end_at, traffic_limit_gb, is_active, user_id))
         conn.commit()
         
         updated = conn.execute("SELECT * FROM users WHERE id = ?", (user_id,)).fetchone()
@@ -1374,20 +1391,21 @@ async def poll_donationalerts():
                             user = conn.execute("SELECT * FROM users WHERE username = ? COLLATE NOCASE", (username,)).fetchone()
                         
                         if user:
-                            current_expiry = user.get("tariff_days_remaining", 0)
-                            if current_expiry > 0:
-                                new_expiry = current_expiry + days
+                            now_ts = int(time.time())
+                            current_end = user.get("tariff_end_at", 0)
+                            if current_end > now_ts:
+                                new_end = current_end + days * 86400
                             else:
-                                new_expiry = days
+                                new_end = now_ts + days * 86400
                             
                             conn.execute("""
                                 UPDATE users SET 
                                     tier = ?,
                                     tariff_days_bought = tariff_days_bought + ?,
-                                    tariff_days_remaining = ?,
+                                    tariff_end_at = ?,
                                     total_paid_rubles = total_paid_rubles + ?
                                 WHERE id = ?
-                            """, (tier, days, new_expiry, amount, user["id"]))
+                            """, (tier, days, new_end, amount, user["id"]))
                             conn.commit()
                             
                             sub_id = user["subscription_id"]