diff --git a/fc-community-backend/apps/api/src/app.controller.ts b/fc-community-backend/apps/api/src/app.controller.ts
index adf665ee..5c07ef06 100644
--- a/fc-community-backend/apps/api/src/app.controller.ts
+++ b/fc-community-backend/apps/api/src/app.controller.ts
@@ -12,6 +12,11 @@ import {
   Headers,
 } from "@nestjs/common";
 import { getNetworkConfig } from "./factchain-core/networks/config";
+
+function validateInputAddress(address: string): boolean {
+  return (/^(0x){1}[0-9a-fA-F]{40}$/i.test(address));
+}
+
 @Controller()
 export class AppController {
   constructor(private readonly appService: AppService) {}
@@ -38,6 +43,14 @@ export class AppController {
     @Headers() headers: Record<string, any>,
   ): Promise<NotesResponse> {
     const network = getNetworkConfig(headers["network"]);
+
+    if (creatorAddress && !validateInputAddress(creatorAddress)) {
+      throw new Error("Invalid creatorAddress");
+    }
+    if (awaitingRatingBy && !validateInputAddress(awaitingRatingBy)) {
+      throw new Error("Invalid awaitingRatingBy");
+    }
+
     let notes = [];
 
     // Double Query Params
@@ -90,7 +103,7 @@ export class AppController {
     @Query("noteUrl") noteUrl: string,
     @Headers() headers: Record<string, any>,
   ): Promise<XSignedNoteIDResponse> {
-    const network = getNetworkConfig(headers["Network"]);
+    const network = getNetworkConfig(headers["network"]);
     console.log(`Get factchain ID for X note URL ${noteUrl}`);
     const res = await this.appService.getXNoteID(network, noteUrl);
     return res;
@@ -104,7 +117,7 @@ export class AppController {
     @Body("content") content: string,
     @Headers() headers: Record<string, any>,
   ): Promise<XSignedNoteIDResponse> {
-    const network = getNetworkConfig(headers["Network"]);
+    const network = getNetworkConfig(headers["network"]);
     const res = await this.appService.createXNoteMetadata(
       network,
       noteUrl,
diff --git a/fc-community-extension/src/pages/popup.js b/fc-community-extension/src/pages/popup.js
index 191d3692..f6b9433b 100644
--- a/fc-community-extension/src/pages/popup.js
+++ b/fc-community-extension/src/pages/popup.js
@@ -105,9 +105,13 @@ function FCProfile(props) {
 }
 
 function FCNotes(props) {
-  const [notes] = createResource(() =>
-    getNotesForAllSocials(props.queryparams)
-  );
+  const [notes] = createResource(props.loggedIn, (loggedIn) => {
+    if (loggedIn) {
+      return getNotesForAllSocials(props.queryparams);
+    } else {
+      return null;
+    }
+  });
 
   return (
     <FCContainer>
@@ -120,7 +124,7 @@ function FCNotes(props) {
             <div>to view Factchain notes</div>
           </div>
         </Match>
-        <Match when={notes() !== undefined}>
+        <Match when={notes()}>
           <Switch>
             <Match when={notes().length > 0}>
               <div class="space-y-4">
diff --git a/fc-community-extension/src/utils/backend.js b/fc-community-extension/src/utils/backend.js
index 475477e8..c61f61a9 100644
--- a/fc-community-extension/src/utils/backend.js
+++ b/fc-community-extension/src/utils/backend.js
@@ -72,6 +72,7 @@ export const getXNoteId = async (noteUrl) => {
       method: 'GET',
       headers: {
         'Content-Type': 'application/json',
+        network: 'ETHEREUM_SEPOLIA',
       },
     });
     if (response.status === 404) {
@@ -98,6 +99,7 @@ export const createXNoteId = async (noteUrl, content) => {
       method: 'POST',
       headers: {
         'Content-Type': 'application/json',
+        network: 'ETHEREUM_SEPOLIA',
       },
       body: JSON.stringify({ noteUrl, content }),
     });