diff --git a/src/components/Profile.tsx b/src/components/Profile.tsx
index d6435d2..94bd3ed 100644
--- a/src/components/Profile.tsx
+++ b/src/components/Profile.tsx
@@ -122,7 +122,7 @@ const Profile = (props: IProfile) => {
         variant="standard"
         size="small"
         onChange={(e: any) => setName(e.target.value)}
-        value={name}
+        value={name || ""}
         className="name"
       />
       <TextField
@@ -130,7 +130,7 @@ const Profile = (props: IProfile) => {
         label="IPNS"
         variant="standard"
         size="small"
-        value={getStorageItem(config.IPNS_DATA + account, "")}
+        value={getStorageItem(config.IPNS_DATA + account, "") || ""}
         className="name"
       />
       <TextField
@@ -138,7 +138,7 @@ const Profile = (props: IProfile) => {
         label="Wallet"
         variant="standard"
         size="small"
-        value={account}
+        value={account || ""}
         className="wallet"
       />
       <TextField
@@ -150,7 +150,7 @@ const Profile = (props: IProfile) => {
         maxRows={30}
         size="small"
         onChange={(e: any) => setBio(e.target.value)}
-        value={bio}
+        value={bio || ""}
       />
       <div className="submit">
         <Button variant="contained" onClick={onSave} fullWidth>
diff --git a/src/components/SyncWorker.tsx b/src/components/SyncWorker.tsx
index 4611a9e..dce0825 100644
--- a/src/components/SyncWorker.tsx
+++ b/src/components/SyncWorker.tsx
@@ -54,11 +54,12 @@ const SyncWorker = (props: ISyncWorker) => {
   // }, [account]);
 
   useEffect(() => {
-    sync();
+    const intervalId = setInterval(() => sync(), 60000);
+    return () => clearInterval(intervalId);
   }, [ipnsCid]);
 
   const sync = async () => {
-    if (!ipnsCid) {
+    if (!ipnsCid || ipnsCid === "undefined") {
       return;
     }
 
@@ -82,13 +83,6 @@ const SyncWorker = (props: ISyncWorker) => {
     // get the latest synced address
     let lastSyncNumber = getStorageItem(config.LAST_SYNC_NUMBER + ipnsCid, 0) || 0;
 
-    // check if the source code has been changed
-    const version = getStorageItem(config.VERSION_LABEL, "") || "";
-    if (version !== config.version) {
-      lastSyncNumber = 0;
-      setStorageItem(config.VERSION_LABEL, config.version);
-    }
-
     // reads data from the w3.storage
     setProgress((lastSyncNumber * 100) / (cids.length || 1));
     for (let i = lastSyncNumber; i < cids.length; i++) {
diff --git a/src/hooks/useIPNSData.ts b/src/hooks/useIPNSData.ts
index fd4bd74..14b7b05 100644
--- a/src/hooks/useIPNSData.ts
+++ b/src/hooks/useIPNSData.ts
@@ -9,7 +9,7 @@ const useIPNSData = () => {
   const [ipnsData, setIpnsData] = useState<number[]>([]);
   useEffect(() => {
     (async function() {
-      if (!ipnsCid) {
+      if (!ipnsCid || ipnsCid === "undefined") {
         return;
       }
 
diff --git a/src/pages/HomeLayout.tsx b/src/pages/HomeLayout.tsx
index 6886868..e1ed6e3 100644
--- a/src/pages/HomeLayout.tsx
+++ b/src/pages/HomeLayout.tsx
@@ -52,7 +52,7 @@ const HomeLayout = (props: IHomeLayout) => {
       <NavBar />
 
       <div className="main-container">
-        {ipnsCid && (
+        {ipnsCid  && ipnsCid !== "undefined" && (
           <Routes>
             {routes.map((e) => (
               <Route
diff --git a/src/pages/MainLayout.tsx b/src/pages/MainLayout.tsx
index 159b2ab..59f6646 100644
--- a/src/pages/MainLayout.tsx
+++ b/src/pages/MainLayout.tsx
@@ -33,6 +33,13 @@ const MainLayout = (props: IMainLayout) => {
       }
 
       dispatch(setLoading(true));
+
+      const version = getStorageItem(config.VERSION_LABEL, "") || "";
+      if (version !== config.version) {
+        window.localStorage.clear();
+        setStorageItem(config.VERSION_LABEL, config.version);
+      }
+
       let ipnsCid1 = (getStorageItem(config.IPNS_DATA + account, "") || "");
       if (!ipnsCid1) {
         const ipnsData = await fetchIPNS(account);
@@ -60,7 +67,7 @@ const MainLayout = (props: IMainLayout) => {
           element={React.createElement(e.component)}
         />
       ))}
-      <Route path="*" element={<Navigate to={`/main/${ipnsCid}`} />} />
+      <Route path="*" element={<Navigate to={`/main/${ipnsCid}/`} />} />
     </Routes>
   );
 };
diff --git a/src/utils/config.ts b/src/utils/config.ts
index 3b4fbdb..d1c52ea 100644
--- a/src/utils/config.ts
+++ b/src/utils/config.ts
@@ -6,7 +6,7 @@ const config = {
   LAST_SYNC_RECORD: "LAST_SYNC_RECORD_",
   IPNS_DATA: "IPNS_DATA_",
   VERSION_LABEL: "VERSION",
-  version: "#7",
+  version: "#8",
   RSS_COUNT: 10
 };