diff --git a/app.py b/app.py
index 7c6ebfd..e97ea5f 100644
--- a/app.py
+++ b/app.py
@@ -35,8 +35,8 @@ class Config:
         self.cache_ttl = int(os.getenv("CACHE_TTL_SECONDS", 604800))
         self.rate_limit_per_minute = int(os.getenv("RATE_LIMIT_PER_MINUTE", 20))
         self.http_timeout = int(os.getenv("HTTP_TIMEOUT", 5))
-        self.fail_open = self._parse_bool("FAIL_OPEN", True)
 
+        self.fail_open = self._parse_bool("FAIL_OPEN", True)
         self.debug = self._parse_bool("DEBUG", False)
 
     def validate(self):
@@ -72,6 +72,9 @@ def log_event(event: str, **kwargs):
     details = " ".join(f"{k}={v}" for k, v in kwargs.items())
     logger.info(f"{base} {details}")
 
+def debug_log(title, data):
+    if config.debug:
+        logger.debug(f"{title}: {json.dumps(data, default=str)}")
 
 # ============================================================
 # INIT
@@ -201,8 +204,7 @@ def seed_known_users():
             if members_res.status_code != 200:
                 continue
 
-
-            for user_id in members.keys():
+            for user_id in members_res.json().get("joined", {}).keys():
                 if is_external(user_id):
                     remember_user(user_id)
                     seeded += 1