Update subscriptions.py

subscriptions.py

@@ -33,7 +33,7 @@ def normalize_plan_key(plan_name: str | None) -> str:
     if "creator" in normalized:
         return "creator"
     if "core" in normalized:
-        return "pro"
+        return "core"
     if "light" in normalized:
         return "light"
     return "free"