diff --git a/app/env_config.py b/app/env_config.py
index c71fbea..d1c456f 100644
--- a/app/env_config.py
+++ b/app/env_config.py
@@ -79,22 +79,11 @@ if match:
 else:
     wh_masked_url = "[Invalid webhook URL]"
 
-# HTTP headers
+# HTTP headers - no compression to avoid parsing issues
 HEADERS = {
     "User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36",
-    "Accept": "application/json, text/plain, */*",
-    "Accept-Language": "fr-FR,fr;q=0.9,en-US;q=0.8,en;q=0.7",
-    "Accept-Encoding": "gzip, deflate, br, zstd",
-    "Referer": "https://partners.nvidia.com/",
-    "Origin": "https://partners.nvidia.com",
-    "Connection": "keep-alive",
-    "Sec-Fetch-Dest": "empty",
-    "Sec-Fetch-Mode": "cors",
-    "Sec-Ch-Ua": "\"Google Chrome\";v=\"131\", \"Chromium\";v=\"131\", \"Not.A/Brand\";v=\"24\"",
-    "Sec-Ch-Ua-Platform": "\"macOS\"",
-    "Cache-Control": "no-cache, no-store, must-revalidate",
-    "Pragma": "no-cache",
-    "Expires": "0"
+    "Accept": "application/json",
+    "Referer": "https://partners.nvidia.com/"
 }
 
 # Load country setting and localization config
diff --git a/app/gpu_checker.py b/app/gpu_checker.py
index d3dbc3e..925f4f2 100644
--- a/app/gpu_checker.py
+++ b/app/gpu_checker.py
@@ -41,7 +41,18 @@ def check_rtx_50_founders():
             time.sleep(random.uniform(10, 20))
             return
         response.raise_for_status()
-        data = response.json()
+        
+        # Debug response content
+        logging.info(f"Content-Type: {response.headers.get('Content-Type')}")
+        logging.info(f"Content-Encoding: {response.headers.get('Content-Encoding')}")
+        logging.info(f"Response length: {len(response.content)}")
+        
+        try:
+            data = response.json()
+        except Exception as e:
+            logging.error(f"JSON decode error: {e}")
+            logging.error(f"Response content (first 200 chars): {response.text[:200]}")
+            return
     except requests.exceptions.RequestException as e:
         logging.error(f"SKU API error: {e}")
         return