diff --git a/package.json b/package.json
index f1a5133..78f5cec 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
     "build:win:x64": "vite build && electron-builder --win --x64",
     "build:win:x64:installer": "vite build && electron-builder --win --x64 --config.win.target=nsis",
     "build:win:x64:portable": "vite build && electron-builder --win --x64 --config.win.target=portable",
-    "build:win:x64:portable:zip": "npm run build:win:x64:portable && powershell -Command \"Compress-Archive -Force -Path dist/release/*portable*.exe -DestinationPath dist/release/Telegram-Invite-Automation-win-portable-x64.zip\"",
+    "build:win:x64:portable:zip": "npm run build:win:x64:portable && zip -j -o dist/release/Telegram-Invite-Automation-win-portable-x64.zip dist/release/Telegram-Invite-Automation-win-x64-*.exe",
     "build:mac": "vite build && electron-builder --mac",
     "build:all": "vite build && electron-builder --win --mac",
     "build:linux": "vite build && electron-builder --linux",
diff --git a/resources/converter/win/tgconvertor.exe b/resources/converter/win/tgconvertor.exe
new file mode 100644
index 0000000..9c242fb
Binary files /dev/null and b/resources/converter/win/tgconvertor.exe differ
diff --git a/src/main/store.js b/src/main/store.js
index 84cb9e1..55aeddc 100644
--- a/src/main/store.js
+++ b/src/main/store.js
@@ -459,15 +459,16 @@ function initStore(userDataPath) {
       .run(now, queueId);
   }
 
-  function recordInvite(taskId, userId, username, accountId, accountPhone, sourceChat, status, error, skippedReason, action) {
+  function recordInvite(taskId, userId, username, accountId, accountPhone, sourceChat, status, error, skippedReason, action, userAccessHash) {
     const now = dayjs().toISOString();
     db.prepare(`
-      INSERT INTO invites (task_id, user_id, username, account_id, account_phone, source_chat, action, skipped_reason, invited_at, status, error)
-      VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+      INSERT INTO invites (task_id, user_id, username, user_access_hash, account_id, account_phone, source_chat, action, skipped_reason, invited_at, status, error)
+      VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
     `).run(
       taskId || 0,
       userId,
       username || "",
+      userAccessHash || "",
       accountId || 0,
       accountPhone || "",
       sourceChat || "",
@@ -564,6 +565,7 @@ function initStore(userDataPath) {
       taskId: row.task_id || 0,
       userId: row.user_id,
       username: row.username || "",
+      userAccessHash: row.user_access_hash || "",
       accountId: row.account_id || 0,
       accountPhone: row.account_phone || "",
       sourceChat: row.source_chat || "",
diff --git a/src/main/taskRunner.js b/src/main/taskRunner.js
index c6e78e2..8c124ee 100644
--- a/src/main/taskRunner.js
+++ b/src/main/taskRunner.js
@@ -105,7 +105,8 @@ class TaskRunner {
               "success",
               "",
               "",
-              "invite"
+              "invite",
+              item.user_access_hash
             );
           } else {
             errors.push(`${item.user_id}: ${result.error}`);
@@ -125,7 +126,8 @@ class TaskRunner {
               "failed",
               result.error || "",
               result.error || "",
-              "invite"
+              "invite",
+              item.user_access_hash
             );
           }
         }
diff --git a/src/renderer/App.jsx b/src/renderer/App.jsx
index 722204a..ed779c1 100644
--- a/src/renderer/App.jsx
+++ b/src/renderer/App.jsx
@@ -114,6 +114,7 @@ export default function App() {
   const [inviteFilter, setInviteFilter] = useState("all");
   const [taskSort, setTaskSort] = useState("activity");
   const [sidebarExpanded, setSidebarExpanded] = useState(false);
+  const [expandedInviteId, setExpandedInviteId] = useState(null);
   const bellRef = useRef(null);
 
   const competitorGroups = useMemo(() => {
@@ -362,6 +363,23 @@ export default function App() {
     return date.toLocaleString("ru-RU");
   };
 
+  const explainInviteError = (error) => {
+    if (!error) return "";
+    if (error === "USER_ID_INVALID") {
+      return "Чаще всего нет access_hash (пользователь скрыт/удален/анонимный).";
+    }
+    if (error === "CHAT_WRITE_FORBIDDEN") {
+      return "Аккаунт не может приглашать: нет прав или он не участник группы.";
+    }
+    if (error === "AUTH_KEY_DUPLICATED") {
+      return "Сессия используется в другом месте, Telegram отозвал ключ.";
+    }
+    if (error.includes("FLOOD") || error.includes("PEER_FLOOD")) {
+      return "Ограничение Telegram по частоте действий.";
+    }
+    return "";
+  };
+
   const showNotification = (text, tone) => {
     if (tone === "success") return;
     const entry = { text, tone, id: Date.now() };
@@ -2026,6 +2044,29 @@ export default function App() {
                         {invite.error && invite.error !== "" && (
                           <div className="log-errors">Причина: {invite.error}</div>
                         )}
+                        {invite.error && explainInviteError(invite.error) && (
+                          <div className="log-users">Вероятная причина: {explainInviteError(invite.error)}</div>
+                        )}
+                        <button
+                          type="button"
+                          className="ghost"
+                          onClick={() => setExpandedInviteId(expandedInviteId === invite.id ? null : invite.id)}
+                        >
+                          {expandedInviteId === invite.id ? "Скрыть детали" : "Подробнее"}
+                        </button>
+                        {expandedInviteId === invite.id && (
+                          <div className="invite-details">
+                            <div>Задача: {invite.taskId}</div>
+                            <div>Аккаунт ID: {invite.accountId || "—"}</div>
+                            <div>Действие: {invite.action || "invite"}</div>
+                            <div>Статус: {invite.status}</div>
+                            <div>Пропуск: {invite.skippedReason || "—"}</div>
+                            <div>Ошибка: {invite.error || "—"}</div>
+                            <div>Вероятная причина: {explainInviteError(invite.error) || "—"}</div>
+                            <div>Access Hash: {invite.userAccessHash || "—"}</div>
+                            <div>Время: {formatTimestamp(invite.invitedAt)}</div>
+                          </div>
+                        )}
                       </div>
                     </div>
                   ))}
diff --git a/src/renderer/styles/app.css b/src/renderer/styles/app.css
index 5e0825a..2088bea 100644
--- a/src/renderer/styles/app.css
+++ b/src/renderer/styles/app.css
@@ -883,6 +883,17 @@ button.danger {
   color: #475569;
 }
 
+.invite-details {
+  margin-top: 10px;
+  padding: 10px 12px;
+  border-radius: 10px;
+  background: #f1f5f9;
+  color: #334155;
+  font-size: 12px;
+  display: grid;
+  gap: 4px;
+}
+
 .wrap {
   word-break: break-all;
 }