diff --git a/src/Controllers/Common/AuthenticationController.cs b/src/Controllers/Common/AuthenticationController.cs
index 3fc5548..8e94a34 100644
--- a/src/Controllers/Common/AuthenticationController.cs
+++ b/src/Controllers/Common/AuthenticationController.cs
@@ -24,11 +24,14 @@ public class AuthenticationController : Controller {
     [Produces("application/xml")]
     [Route("v3/AuthenticationWebService.asmx/GetRules")]
     [EncryptResponse]
-    public IActionResult GetRules() {
+    public IActionResult GetRules([FromForm] string apiKey) {
         GetProductRulesResponse response = new GetProductRulesResponse {
             GlobalSecretKey = "11A0CC5A-C4DF-4A0E-931C-09A44C9966AE"
         };
 
+        if (ClientVersion.GetVersion(apiKey) <= ClientVersion.WoJS_AdvLand)
+            response.GlobalSecretKey = "11A0CC5AC4DF4A0E931C09A44C9966AE"; // lands use different key format
+
         return Ok(response);
     }