use only one config field

bukkit/src/main/java/app/shopmc/plugin/bukkit/BukkitShopMCPlugin.java

@@ -26,7 +26,7 @@ public void onEnable() {
             Bukkit.getPluginManager().disablePlugin(this);
         }
 
-        String serverURI = "wss://router.shopmc.app/" + config.customer + "/" + config.server;
+        String serverURI = "wss://router.shopmc.app/" + config.key;
         BukkitShopMCPlugin _this = this;
         socket = new WebSocketClient(URI.create(serverURI))  {
             @Override

common/src/main/java/app/shopmc/plugin/config/Config.java

@@ -1,22 +1,16 @@
 package app.shopmc.plugin.config;
 
 public class Config {
-    public final String customer;
-    public final String server;
+    public final String key;
 
     public Config(final ConfigLoader loader) throws EmptyConfigFieldException {
-        this.customer = loader.getString("customer");
-        this.server = loader.getString("server");
+        this.key = loader.getString("key");
         this.checkValues();
     }
 
     private void checkValues() throws EmptyConfigFieldException {
-        if (this.customer == null || this.customer.isEmpty()) {
-            throw new EmptyConfigFieldException("customer");
-        }
-
-        if (this.server == null || this.server.isEmpty()) {
-            throw new EmptyConfigFieldException("server");
+        if (this.key == null || this.key.isEmpty()) {
+            throw new EmptyConfigFieldException("key");
         }
     }
 }

common/src/main/resources/config.yml

@@ -1,7 +1,3 @@
-# Customer ID
-# You can find it https://shopmc.app/shop/[ID]
-customer: ""
-
-# Server ID
+# Plugin Key
 # You can find it in shopmc dashboard (edit server modal)
-server: ""
+key: ""