diff --git a/appinfo/info.xml b/appinfo/info.xml
index 78b30f4..e75e846 100644
--- a/appinfo/info.xml
+++ b/appinfo/info.xml
@@ -22,7 +22,7 @@
     <category>auth</category>
     <dependencies>
         <php min-version="8.0"/>
-        <nextcloud min-version="25" max-version="27"/>
+        <nextcloud min-version="25" max-version="30"/>
     </dependencies>
     <settings>
         <admin>\OCA\UserSQL\Settings\Admin</admin>
diff --git a/lib/Backend/GroupBackend.php b/lib/Backend/GroupBackend.php
index e48a2a5..82fe706 100644
--- a/lib/Backend/GroupBackend.php
+++ b/lib/Backend/GroupBackend.php
@@ -32,6 +32,7 @@
 use OCP\Group\Backend\IGroupDetailsBackend;
 use OCP\Group\Backend\IIsAdminBackend;
 use OCP\Group\Backend\ISearchableGroupBackend;
+use OCP\Group\Backend\INamedBackend;
 use OCP\ILogger;
 use OCP\IUserManager;
 
@@ -91,7 +92,15 @@ public function __construct(
         $this->groupRepository = $groupRepository;
     }
 
-    /**
+	/**
+     * @inheritdoc
+     */
+	public function getBackendName(): string
+	{
+        return "User SQL";
+	}
+
+	/**
      * @inheritdoc
      */
     public function getGroups($search = "", $limit = null, $offset = null)
diff --git a/lib/Backend/UserBackend.php b/lib/Backend/UserBackend.php
index 1824c4a..8d531b8 100644
--- a/lib/Backend/UserBackend.php
+++ b/lib/Backend/UserBackend.php
@@ -264,6 +264,13 @@ private function getUser($uid)
             foreach ($this->actions as $action) {
                 $action->doAction($user);
             }
+        }elseif ($this->properties[Opt::PLACEHOLDER_USERS]){
+            $user = new User();
+            $user->uid = $uid;
+            $user->active = false;
+            $user->email = "";
+            $user->name = "Deleted User";
+            $user->username = "deleted";
         }
 
         return $user;
diff --git a/lib/Constant/Opt.php b/lib/Constant/Opt.php
index 005122c..f7a1b44 100644
--- a/lib/Constant/Opt.php
+++ b/lib/Constant/Opt.php
@@ -48,4 +48,5 @@ final class Opt
     const REVERSE_ACTIVE = "opt.reverse_active";
     const SAFE_STORE = "opt.safe_store";
     const USE_CACHE = "opt.use_cache";
+    const PLACEHOLDER_USERS = "opt.placeholder_users";
 }
diff --git a/lib/Properties.php b/lib/Properties.php
index 762ce3c..bd90314 100644
--- a/lib/Properties.php
+++ b/lib/Properties.php
@@ -176,7 +176,7 @@ private function isBooleanParam($param)
             $param, [
                 Opt::APPEND_SALT, Opt::CASE_INSENSITIVE_USERNAME, Opt::EMAIL_LOGIN,
                 Opt::NAME_CHANGE, Opt::PASSWORD_CHANGE, Opt::PREPEND_SALT,
-                Opt::PROVIDE_AVATAR, Opt::REVERSE_ACTIVE, Opt::SAFE_STORE,
+                Opt::PROVIDE_AVATAR, Opt::REVERSE_ACTIVE, Opt::PLACEHOLDER_USERS, Opt::SAFE_STORE,
                 Opt::USE_CACHE
             ]
         );
diff --git a/templates/admin.php b/templates/admin.php
index 74772e7..629f48d 100644
--- a/templates/admin.php
+++ b/templates/admin.php
@@ -118,7 +118,8 @@ function print_select_options(
                 print_checkbox_input($l, "opt-password_change", "Allow password change", $_["opt.password_change"]);
                 print_checkbox_input($l, "opt-provide_avatar", "Allow providing avatar", $_["opt.provide_avatar"]);
                 print_checkbox_input($l, "opt-case_insensitive_username", "Case-insensitive username", $_["opt.case_insensitive_username"]);
-                print_checkbox_input($l, "opt-reverse_active", "Reverse active column", $_["opt.reverse_active"]); ?>
+                print_checkbox_input($l, "opt-reverse_active", "Reverse ACTIVE column", $_["opt.reverse_active"]);
+                print_checkbox_input($l, "opt-placeholder_users", "Placeholders for missing users in SQL database", $_["opt.placeholder_users"]); ?>
                 <div class="button-right"><?php
                     print_checkbox_input($l, "opt-use_cache", "Use cache", $_["opt.use_cache"], false); ?>
                     <input type="submit" id="user_sql-clear_cache" value="<?php p($l->t("Clear cache")); ?>">