Add small note to config yml & corrected a check

src/main/java/me/libraryaddict/disguise/LibsDisguises.java

@@ -56,8 +56,7 @@ public class LibsDisguises extends JavaPlugin {
         LibsPremium.check(getDescription().getVersion(), getFile());
 
         if (!LibsPremium.isPremium()) {
-            getLogger()
-                    .info("You are running the free version, commands limited to non-players (Console, Command " +
+            getLogger().info("You are running the free version, commands limited to non-players (Console, Command " +
                     "Blocks)");
         }
 
@@ -242,8 +241,7 @@ public class LibsDisguises extends JavaPlugin {
 
             // Invalidate invalid distribution
             if (LibsPremium.isPremium() && LibsPremium.getPaidInformation() != null &&
-                    (!LibsPremium.getPaidInformation().isLegit() ||
-                            LibsPremium.getPaidInformation().getDownloadID().equals("-1895736039"))) {
+                    !LibsPremium.getPaidInformation().isLegit()) {
                 throw new IllegalStateException(
                         "Error while checking pi rate on startup! Please re-download the jar from SpigotMC before " +
                                 "reporting this error!");

src/main/java/me/libraryaddict/disguise/utilities/LibsPremium.java

@@ -11,6 +11,8 @@ import java.io.File;
 import java.io.IOException;
 import java.net.URL;
 import java.net.URLClassLoader;
+import java.util.Date;
+import java.util.concurrent.TimeUnit;
 
 /**
  * Created by libraryaddict on 2/06/2017.
@@ -194,7 +196,11 @@ public class LibsPremium {
 
             if (plugin.isPremium()) {
                 if (!isValidVersion(version, plugin.getVersion()) || plugin.getUserID() == null ||
-                        plugin.getDownloadID() == null) {
+                        plugin.getDownloadID() == null || plugin.getUserID().equals("666666") ||
+                        plugin.getParsedBuildDate().before(getPluginInformation().getParsedBuildDate()) ||
+                        plugin.getParsedBuildDate().after(new Date(
+                                getPluginInformation().getParsedBuildDate().getTime() +
+                                        TimeUnit.DAYS.toMillis(365 * 2)))) {
                     DisguiseUtilities.getLogger().warning(
                             "You have an old Lib's Disguises jar (" + file.getName() + " " + fileInfo +
                                     ") in the LibsDisguises folder! For security purposes, please replace this with a" +

src/main/java/me/libraryaddict/disguise/utilities/plugin/PluginInformation.java

@@ -2,6 +2,9 @@ package me.libraryaddict.disguise.utilities.plugin;
 
 import me.libraryaddict.disguise.utilities.LibsPremium;
 
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
 /**
  * Created by libraryaddict on 20/06/2019.
  */
@@ -53,6 +56,16 @@ public class PluginInformation {
         return buildDate;
     }
 
+    public Date getParsedBuildDate() {
+        try {
+            return new SimpleDateFormat("dd/MM/yyyy HH:mm").parse(getBuildDate());
+        }
+        catch (Exception ex) {
+        }
+
+        return null;
+    }
+
     public boolean isLegit() {
         return getUserID().matches("[0-9]+") && getResourceID().equals("32453") && getDownloadID().matches("-?[0-9]+");
     }

src/main/resources/config.yml

@@ -16,6 +16,7 @@ Permissions:
 
 # Disables commands with the exception of /libsdisguises. Useful if you don't want the plugin to be used by anything
 #  but a plugin
+# Useful if you didn't purchase the plugin.
 DisableCommands: false
 
 # The disguise plugin stores all GameProfiles inside a folder called "GameProfiles" as a local cache