src/de/steamwar/bungeecore/listeners/mods/ModLoaderBlocker.java

@@ -41,11 +41,16 @@ public class ModLoaderBlocker extends BasicListener {
         if(!(sender instanceof ProxiedPlayer))
             return;
 
+        ProxiedPlayer p = (ProxiedPlayer) sender;
+        if (e.getTag().equals("lunarclient:pm")) {
+            p.disconnect(Message.parseToComponent("MOD_LOADER_LUNAR_CLIENT", false, p));
+            return;
+        }
+
         if(!e.getTag().equals("minecraft:brand"))
             return;
 
         String brand = new String(e.getData());
-        ProxiedPlayer p = (ProxiedPlayer) sender;
         if(brand.contains("fabric") || brand.contains("quilt") || brand.contains("LiteLoader")){
             if (!Storage.fabricCheckedPlayers.containsKey(p)) {
                 Storage.fabricPlayers.add(p);