diff --git a/.gitignore b/.gitignore
index b3bf067..7d9a8ee 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,5 @@
 node_modules
 server/data
-server/db
 data
 background
 .vscode
diff --git a/frontend/src/helpers/constants.js b/frontend/src/helpers/constants.js
index ff3dff8..38a48a2 100644
--- a/frontend/src/helpers/constants.js
+++ b/frontend/src/helpers/constants.js
@@ -1,5 +1,5 @@
 export const APP_NAME = "NeonLink";
-export const VERSION = "1.4.4";
+export const VERSION = "1.4.5";
 export const DEF_MAX_ITEMS = 20;
 export const DEF_COLUMNS = 3;
 export const CARD_HEADER_STYLE = [
diff --git a/frontend/src/pages/settings/tabs/mainTab/UsersList.jsx b/frontend/src/pages/settings/tabs/mainTab/UsersList.jsx
index 1ddd35e..09afa4b 100644
--- a/frontend/src/pages/settings/tabs/mainTab/UsersList.jsx
+++ b/frontend/src/pages/settings/tabs/mainTab/UsersList.jsx
@@ -2,11 +2,15 @@ import React, { useEffect, useRef, useState } from "react";
 import { notify } from "../../../../components/Notification";
 import { deleteJSON, getJSON, putJSON } from "../../../../helpers/fetch";
 import UserItem from "./UserItem";
+import { appSettingsKeys, useAppSettingsStore } from "../../../../stores/appSettingsStore";
 
 export default function UsersList() {
   const [users, setUsers] = useState([]);
   const [isLoading, setIsLoading] = useState(false);
   const [isError, setIsError] = useState(undefined);
+  const [authenticationEnabled] = useAppSettingsStore(
+    appSettingsKeys.AuthenticationEnabled
+  );
 
   const abortController = useRef(null);
 
@@ -74,11 +78,19 @@ export default function UsersList() {
   }, []);
 
   useEffect(() => {
-    if (isError) notify("Error", isError?.message || "", "error");
-  }, [isError]);
+    if (isError && authenticationEnabled) {
+      notify(
+        "Error",
+        "Can't get list of users. " + isError?.message || "",
+        "error"
+      );
+    }
+  }, [isError, authenticationEnabled]);
 
   if (isLoading) return <div>Loading...</div>;
 
+  if (users.length === 0) return <div>No users</div>;
+
   return (
     <ul className="border rounded px-4 py-2 flex flex-col gap-1">
       {users.map((user) => (
diff --git a/server/db/sqlite/stores/backgrounds.js b/server/db/sqlite/stores/backgrounds.js
index 0cb28e5..d12c76c 100644
--- a/server/db/sqlite/stores/backgrounds.js
+++ b/server/db/sqlite/stores/backgrounds.js
@@ -9,22 +9,43 @@ export default class BackgroundsStore {
   }
 
   deleteItem(id, userId) {
-    const deleteQuery = `DELETE FROM backgrounds WHERE id=:id AND (userId=:userId OR userId IS NULL)`;
-    return this.db.prepare(deleteQuery).run({ id, userId }).changes;
+    const deleteQuery = `DELETE FROM backgrounds WHERE id=:id`;
+    let deleteParams = {id};
+    if (userId) {
+      deleteQuery += " AND (userId IN (:userId, 0) OR userId IS NULL)";
+      deleteParams += { userId };
+    }
+    return this.db.prepare(deleteQuery).run(deleteParams).changes;
   }
 
   getAll(userId) {
-    const selectQuery = `SELECT * FROM backgrounds WHERE userId=:userId OR userId IS NULL`;
-    return this.db.prepare(selectQuery).all({ userId });
+    let selectQuery = `SELECT * FROM backgrounds`;
+    let selectParams = {};
+    if (userId) {
+      selectQuery += " WHERE userId IN (:userId, 0) OR userId IS NULL";
+      selectParams += { userId };
+    }
+
+    return this.db.prepare(selectQuery).all(selectParams);
   }
 
   getItemById(id, userId) {
-    const selectQuery = `SELECT * FROM backgrounds WHERE id=:id AND (userId=:userId OR userId IS NULL)`;
-    return this.db.prepare(selectQuery).all({ id, userId });
+    let selectQuery = `SELECT * FROM backgrounds WHERE id=:id`;
+    let selectParams = {id};
+    if (userId) {
+      selectQuery += " AND (userId IN (:userId, 0) OR userId IS NULL)";
+      selectParams += { userId };
+    }
+    return this.db.prepare(selectQuery).all(selectParams);
   }
 
   getItemByUrl(url, userId) {
-    const selectQuery = `SELECT * FROM backgrounds WHERE url=:url AND (userId=:userId OR userId IS NULL)`;
-    return this.db.prepare(selectQuery).all({ url, userId });
+    let selectQuery = `SELECT * FROM backgrounds WHERE url=:url`;
+    let selectParams = {url};
+    if (userId) {
+      selectQuery += " AND (userId IN (:userId, 0) OR userId IS NULL)";
+      selectParams += { userId };
+    }
+    return this.db.prepare(selectQuery).all(selectParams);
   }
 }
diff --git a/server/db/sqlite/stores/bookmarks.js b/server/db/sqlite/stores/bookmarks.js
index 0bdaa45..b20f678 100644
--- a/server/db/sqlite/stores/bookmarks.js
+++ b/server/db/sqlite/stores/bookmarks.js
@@ -59,16 +59,15 @@ export default class BookmarksStore {
           category !== undefined
             ? "LEFT JOIN category ON category.id = bookmarks.categoryId"
             : ""
-        }
-        WHERE userId = :userId`;
+        }`;
 
     const selectParams = {
       userId,
     };
 
-    if (search || tag || category) {
-      const conditions = [];
+    const conditions = [];
 
+    if (search || tag || category) {
       if (search) {
         conditions.push("bookmarks.search LIKE :search");
         selectParams.search = `%${search}%`;
@@ -81,10 +80,15 @@ export default class BookmarksStore {
         conditions.push("category.name = :category");
         selectParams.category = category;
       }
+    }
 
-      selectQuery += ` WHERE ${conditions.join(" AND ")}`;
+    if (userId) {
+      conditions.push("(userId IN (:userId, 0) OR userId IS NULL)");
+      selectParams.userId = userId;
     }
 
+    selectQuery += ` WHERE ${conditions.join(" AND ")}`;
+
     selectQuery += ` GROUP BY bookmarks.id
       ORDER BY bookmarks.created DESC`;
 
@@ -146,7 +150,11 @@ export default class BookmarksStore {
 
     const conditions = [];
 
-    conditions.push("bookmarks.userId = :userId");
+    if (userId) {
+      conditions.push("(bookmarks.userId IN (:userId, 0) OR bookmarks.userId IS NULL)");
+      countParams.userId = userId;
+      selectParams.userId = userId;
+    }
 
     if (search || tag || category) {
       if (search) {
@@ -166,8 +174,10 @@ export default class BookmarksStore {
       }
     }
 
-    countQuery += ` WHERE ${conditions.join(" AND ")}`;
-    selectQuery += ` WHERE ${conditions.join(" AND ")}`;
+    if (conditions.length > 0) {
+      countQuery += ` WHERE ${conditions.join(" AND ")}`;
+      selectQuery += ` WHERE ${conditions.join(" AND ")}`;
+    }
 
     selectQuery += ` GROUP BY bookmarks.id
       ORDER BY bookmarks.created DESC
@@ -192,22 +202,27 @@ export default class BookmarksStore {
         id, url, title, desc, bookmarks.categoryId, created, bookmarkPosition.position
       FROM bookmarks
         LEFT JOIN bookmarkPosition ON bookmarks.id = bookmarkPosition.bookmarkId
-      WHERE
-        bookmarks.categoryId = :categoryId
-        AND
-        bookmarks.userId = :userId
-      ORDER BY bookmarkPosition.position`;
+      `;
+    let selectParams = { categoryId, userId }
+
+    let conditions = []
+    conditions.push("bookmarks.categoryId = :categoryId")
+    if(userId){
+      conditions.push("(bookmarks.userId IN (:userId, 0) OR bookmarks.userId IS NULL)")
+    }
+    selectQuery += `WHERE ${conditions.join(" AND ")} `
+    selectQuery += "ORDER BY bookmarkPosition.position"
 
     return this.db
       .prepare(selectQuery)
-      .all({ categoryId, userId })
+      .all(selectParams)
       .map((bookmark) => {
         return { ...bookmark, tags: bookmark.tags?.split(",") };
       });
   }
 
   getItemById(userId, id) {
-    const selectQuery = `SELECT 
+    let selectQuery = `SELECT 
         bookmarks.id,
         url,
         title,
@@ -218,16 +233,27 @@ export default class BookmarksStore {
       FROM bookmarks 
         LEFT JOIN bookmarksTags ON bookmarksTags.bookmarkId = bookmarks.id 
         LEFT JOIN tags ON bookmarksTags.tagId = tags.id
-      WHERE bookmarks.id = :id
-      AND bookmarks.userId = :userId
-      GROUP BY bookmarks.id`;
-
-    return this.db.prepare(selectQuery).get({ id, userId });
+      `;
+    let selectParams = {id}
+    let conditions = ["bookmarks.id = :id"]
+    conditions.push()
+    if(userId){
+      conditions.push("(bookmarks.userId IN (:userId, 0) OR bookmarks.userId IS NULL)")
+      selectParams.userId = userId
+    }
+    selectQuery += `WHERE ${conditions.join(" AND ")} `
+    selectQuery += `GROUP BY bookmarks.id`
+    return this.db.prepare(selectQuery).get(selectParams);
   }
 
   getItemByUrl(userId, url) {
-    const selectQuery = `SELECT * FROM bookmarks WHERE url = :url AND userId = :userId`;
-    return this.db.prepare(selectQuery).get({ url, userId });
+    const selectQuery = `SELECT * FROM bookmarks WHERE url = :url`;
+    let selectParams = {url}
+    if(userId){
+      selectQuery += " AND (userId IN (:userId, 0) OR userId IS NULL)"
+      selectParams.userId = userId
+    }
+    return this.db.prepare(selectQuery).get(selectParams);
   }
 
   getIconByBookmarkId(id) {
diff --git a/server/db/sqlite/stores/categories.js b/server/db/sqlite/stores/categories.js
index d06525a..c35a0eb 100644
--- a/server/db/sqlite/stores/categories.js
+++ b/server/db/sqlite/stores/categories.js
@@ -22,13 +22,17 @@ export default class CategoriesStore {
   }
 
   getAll(userId) {
-    const selectQuery = `SELECT 
+    let selectQuery = `SELECT 
         id, name, color, position FROM category 
-      INNER JOIN categoryPosition ON categoryPosition.categoryId = category.id
-      WHERE userId = :userId
-      ORDER BY position ASC`;
+      INNER JOIN categoryPosition ON categoryPosition.categoryId = category.id`
+    let selectParams = {}
+      if(userId){
+        selectQuery += ` WHERE (userId IN (:userId, 0) OR userId IS NULL) `
+        selectParams.userId = userId
+      }
+      selectQuery += ` ORDER BY position ASC`;
 
-    return this.db.prepare(selectQuery).all({ userId });
+    return this.db.prepare(selectQuery).all(selectParams);
   }
 
   getItemById(id) {
@@ -42,15 +46,21 @@ export default class CategoriesStore {
   }
 
   getItemByName(name, userId) {
-    const selectQuery = `SELECT 
+    let selectQuery = `SELECT 
         id, name, color, position FROM category 
       INNER JOIN categoryPosition ON categoryPosition.categoryId = category.id
-      WHERE 
-        name = :name
-        AND userId = :userId
-      ORDER BY position ASC`;
-
-    return this.db.prepare(selectQuery).get({ name, userId });
+ 
+      `;
+    let selectParams = {name}
+    let conditions = []
+    conditions.push("name = :name")
+    if(userId){
+      conditions.push("(userId IN (:userId, 0) OR userId IS NULL)")
+      selectParams.userId = userId
+    }
+    selectQuery += ` WHERE ${conditions.join(" AND ")} `
+    selectQuery += `ORDER BY position ASC`
+    return this.db.prepare(selectQuery).get(selectParams);
   }
 
   deleteItem(id) {
diff --git a/server/db/sqlite/stores/tags.js b/server/db/sqlite/stores/tags.js
index c941491..a1b60cb 100644
--- a/server/db/sqlite/stores/tags.js
+++ b/server/db/sqlite/stores/tags.js
@@ -16,8 +16,14 @@ export default class TagsStore {
   }
 
   existsItemByName(name, userId) {
-    const selectQuery = `SELECT COUNT(*) AS count FROM tags WHERE name = :name AND userId = :userId`;
-    const result = this.db.prepare(selectQuery).get({ name, userId });
+    let selectQuery = `SELECT COUNT(*) AS count FROM tags WHERE name = :name`;
+    let selectParams = { name };
+    if (userId) {
+      selectQuery += ` AND (userId IN (:userId, 0) OR userId IS NULL) `;
+      selectParams.userId = userId;
+    }
+
+    const result = this.db.prepare(selectQuery).get(selectParams);
     return result && result.count > 0;
   }
 
@@ -26,22 +32,25 @@ export default class TagsStore {
         id, name 
       FROM tags`;
 
-    const selectParams = { userId };
-    const conditions = [];
-    conditions.push("tags.userId = :userId");
+    let selectParams = {};
+    let conditions = [];
+    if (userId) {
+      conditions.push("(tags.userId IN (:userId, 0) OR tags.userId IS NULL)");
+      selectParams.userId = userId;
+    }
 
     if (name) {
       conditions.push("tags.name LIKE :name");
       selectParams.name = `%${name}%`;
     }
 
-    selectQuery += ` WHERE ${conditions.join(" AND ")}`;
+    if (conditions.length > 0) {
+      selectQuery += ` WHERE ${conditions.join(" AND ")}`;
+    }
 
     selectQuery += ` GROUP BY tags.id
       ORDER BY tags.name`;
 
-    console.log(selectQuery, selectParams);
-
     return this.db.prepare(selectQuery).all(selectParams);
   }