Fix

src/main/java/de/damcraft/serverseeker/ssapi/requests/WhereisRequest.java

@@ -1,8 +1,10 @@
 package de.damcraft.serverseeker.ssapi.requests;
 
 import com.google.gson.JsonObject;
+import de.damcraft.serverseeker.ServerSeekerSystem;
 
 public class WhereisRequest {
+    private final String api_key = ServerSeekerSystem.get().apiKey;
     private enum PlayerSearchType {
         Name,
         Uuid
@@ -25,6 +27,7 @@ public void setUuid(String uuid) {
     public String json() {
         JsonObject jo = new JsonObject();
         jo.addProperty(playerSearchType.name().toLowerCase(), playerSearchValue);
+        jo.addProperty("api_key", api_key);
         return jo.toString();
     }
 }