diff --git a/App.tsx b/App.tsx
index e7ddf1e..102e0cb 100644
--- a/App.tsx
+++ b/App.tsx
@@ -15,17 +15,9 @@ const App: React.FC = () => {
   const [hwVersion, setHwVersion] = useState<string | null>(null);
   const [activeTab, setActiveTab] = useState<'dashboard' | 'settings'>('dashboard');
   const [errorMsg, setErrorMsg] = useState<string | null>(null);
-  const [isTerminalOpen, setIsTerminalOpen] = useState(true);
+  const [isTerminalOpen, setIsTerminalOpen] = useState(false);
+
 
-  // Polling Logic
-  useEffect(() => {
-    try {
-      // @ts-ignore
-      (window.adsbygoogle = window.adsbygoogle || []).push({});
-    } catch (e) {
-      console.error("AdSense error", e);
-    }
-  }, []);
 
   useEffect(() => {
     let isMounted = true;
@@ -65,6 +57,7 @@ const App: React.FC = () => {
         console.error("Polling error:", e);
         // Log to terminal for debugging
         serialService.log('error', `Poll Fail: ${e.message}`);
+        setIsTerminalOpen(true);
       } finally {
         // Schedule next poll cycle in 500ms
         if (isMounted && connectionState === ConnectionState.CONNECTED && activeTab === 'dashboard') {
@@ -93,6 +86,7 @@ const App: React.FC = () => {
       console.error(e);
       setConnectionState(ConnectionState.ERROR);
       setErrorMsg(e.message || "시리얼 포트 연결 실패");
+      setIsTerminalOpen(true);
     }
   };
 
@@ -165,24 +159,6 @@ const App: React.FC = () => {
             <span className="ml-3 hidden lg:block font-medium">EEPROM</span>
           </button>
         </nav>
-
-        {/* AdSense Unit */}
-        <div className="px-4 pb-2">
-          <div className="text-[10px] text-gray-600 text-center mb-1">Sponsored</div>
-          <ins className="adsbygoogle"
-            style={{ display: "block" }}
-            data-ad-client="ca-pub-4444852135420953"
-            data-ad-slot="7799405796"
-            data-ad-format="auto"
-            data-full-width-responsive="true"></ins>
-
-
-
-        </div>
-
-        <div className="p-4 border-t border-gray-200 flex-1 flex flex-col justify-end">
-          {/* AdSense Area - Expanded */}
-        </div>
       </div>
 
       {/* Main Content Area */}