diff --git a/module/oc_telegram_shop/upload/oc_telegram_shop/framework/Telegram/SignatureValidator.php b/module/oc_telegram_shop/upload/oc_telegram_shop/framework/Telegram/SignatureValidator.php
index 1f475bc..119096e 100755
--- a/module/oc_telegram_shop/upload/oc_telegram_shop/framework/Telegram/SignatureValidator.php
+++ b/module/oc_telegram_shop/upload/oc_telegram_shop/framework/Telegram/SignatureValidator.php
@@ -19,7 +19,7 @@ class SignatureValidator
             return;
         }
 
-        $initDataString = rawurldecode($request->header('X-Telegram-Initdata'));
+        $initDataString = base64_decode($request->header('X-Telegram-Initdata'));
 
         if (! $initDataString) {
             throw new TelegramInvalidSignatureException('Invalid Telegram signature!');
@@ -78,13 +78,4 @@ class SignatureValidator
 
         return implode(PHP_EOL, $array);
     }
-
-    public function ensureUserWantsToReceiveMessages($request): void
-    {
-        $initDataString = rawurldecode($request->header('X-Telegram-Initdata'));
-
-        if (! $initDataString) {
-            throw new TelegramInvalidSignatureException('Invalid Telegram signature!');
-        }
-    }
 }
diff --git a/module/oc_telegram_shop/upload/oc_telegram_shop/framework/Telegram/TelegramService.php b/module/oc_telegram_shop/upload/oc_telegram_shop/framework/Telegram/TelegramService.php
index b331416..4aab4e4 100755
--- a/module/oc_telegram_shop/upload/oc_telegram_shop/framework/Telegram/TelegramService.php
+++ b/module/oc_telegram_shop/upload/oc_telegram_shop/framework/Telegram/TelegramService.php
@@ -3,9 +3,6 @@
 namespace Openguru\OpenCartFramework\Telegram;
 
 use GuzzleHttp\Client;
-use JsonException;
-use Openguru\OpenCartFramework\Application;
-use Openguru\OpenCartFramework\Http\Request;
 use Openguru\OpenCartFramework\Logger\Logger;
 
 class TelegramService
@@ -68,29 +65,4 @@ class TelegramService
 
         return $this;
     }
-
-    private function ensureUserWantsToReceiveMessages(): bool
-    {
-        /** @var Request $request */
-        $request = Application::getInstance()->get(Request::class);
-
-        $initDataString = $request->header('X-Telegram-Initdata');
-
-        if (! $initDataString) {
-            return false;
-        }
-
-        parse_str($initDataString, $initData);
-        if (! isset($initData['user'])) {
-            return false;
-        }
-
-        try {
-            $user = json_decode($initData['user'], true, 512, JSON_THROW_ON_ERROR);
-            return ! empty($user['allows_write_to_pm']);
-        } catch (JsonException $e) {
-            $this->logger->logException($e);
-            return false;
-        }
-    }
 }
diff --git a/spa/src/components/ProductsList.vue b/spa/src/components/ProductsList.vue
index 747d909..41e1e0b 100644
--- a/spa/src/components/ProductsList.vue
+++ b/spa/src/components/ProductsList.vue
@@ -17,6 +17,7 @@
           <h3 class="mt-4 text-sm">{{ product.name }}</h3>
           <p class="mt-1 text-lg font-medium">{{ product.price }}</p>
         </RouterLink>
+        <div ref="bottom" style="height: 1px;"></div>
       </div>
 
       <div v-if="productsStore.isLoading" class="text-center mt-5">
@@ -57,6 +58,7 @@ const route = useRoute();
 const categoryId = route.params.category_id ?? null;
 const productsStore = useProductsStore();
 const settings = useSettingsStore();
+const bottom = ref(null);
 
 function haptic() {
   window.Telegram.WebApp.HapticFeedback.selectionChanged();
@@ -89,9 +91,9 @@ async function loadMore() {
 }
 
 useInfiniteScroll(
-    window,
+    bottom,
     loadMore,
-    {distance: 500}
+    {distance: 1000}
 )
 
 watch(() => route.params.id, async newId => {
diff --git a/spa/src/utils/ftch.js b/spa/src/utils/ftch.js
index 648da3b..7b7034a 100644
--- a/spa/src/utils/ftch.js
+++ b/spa/src/utils/ftch.js
@@ -2,15 +2,20 @@ import {ofetch} from "ofetch";
 
 const BASE_URL = '/';
 
+function encodeBase64Unicode(str) {
+    return btoa(new TextEncoder().encode(str).reduce((data, byte) => data + String.fromCharCode(byte), ''));
+}
+
 export const apiFetch = ofetch.create({
     throwHttpErrors: true,
     onRequest({request, options}) {
         const data = window.Telegram?.WebApp?.initData;
 
         if (data) {
+            const encoded = encodeBase64Unicode(data);
             options.headers = {
                 ...options.headers,
-                'X-Telegram-InitData': data,
+                'X-Telegram-InitData': encoded,
             }
         }
     },