diff --git a/src/components/chat/selection.ts b/src/components/chat/selection.ts
index 61b8eb93..a62766b2 100644
--- a/src/components/chat/selection.ts
+++ b/src/components/chat/selection.ts
@@ -26,8 +26,8 @@ import blurActiveElement from "../../helpers/dom/blurActiveElement";
 import { cancelEvent } from "../../helpers/dom/cancelEvent";
 import cancelSelection from "../../helpers/dom/cancelSelection";
 import getSelectedText from "../../helpers/dom/getSelectedText";
+import rootScope from "../../lib/rootScope";
 
-const MAX_SELECTION_LENGTH = 100;
 //const MIN_CLICK_MOVE = 32; // minimum bubble height
 
 export default class ChatSelection {
@@ -473,7 +473,7 @@ export default class ChatSelection {
     if(found) {
       this.selectedMids.delete(mid);
     } else {
-      const diff = MAX_SELECTION_LENGTH - this.selectedMids.size - 1;
+      const diff = rootScope.config.forwarded_count_max - this.selectedMids.size - 1;
       if(diff < 0) {
         toast(I18n.format('Chat.Selection.LimitToast', true));
         return;
diff --git a/src/components/dialogsContextMenu.ts b/src/components/dialogsContextMenu.ts
index 6400b0d1..36c88a84 100644
--- a/src/components/dialogsContextMenu.ts
+++ b/src/components/dialogsContextMenu.ts
@@ -14,6 +14,10 @@ import PopupDeleteDialog from "./popups/deleteDialog";
 import { i18n } from "../lib/langPack";
 import findUpTag from "../helpers/dom/findUpTag";
 import appNotificationsManager from "../lib/appManagers/appNotificationsManager";
+import PopupPeer from "./popups/peer";
+import AppChatFoldersTab from "./sidebarLeft/tabs/chatFolders";
+import appSidebarLeft from "./sidebarLeft";
+import { toastNew } from "./toast";
 
 export default class DialogsContextMenu {
   private element: HTMLElement;
@@ -101,7 +105,27 @@ export default class DialogsContextMenu {
   };
 
   private onPinClick = () => {
-    appMessagesManager.toggleDialogPin(this.selectedId, this.filterId);
+    appMessagesManager.toggleDialogPin(this.selectedId, this.filterId).catch(err => {
+      if(err.type === 'PINNED_DIALOGS_TOO_MUCH') {
+        if(this.filterId >= 1) {
+          toastNew({langPackKey: 'PinFolderLimitReached'});
+        } else {
+          new PopupPeer('pinned-dialogs-too-much', {
+            buttons: [{
+              langKey: 'OK',
+              isCancel: true
+            }, {
+              langKey: 'FiltersSetupPinAlert',
+              callback: () => {
+                new AppChatFoldersTab(appSidebarLeft).open();
+              }
+            }],
+            descriptionLangKey: 'PinToTopLimitReached2',
+            descriptionLangArgs: [i18n('Chats', [rootScope.config.pinned_dialogs_count_max])]
+          }).show();
+        }
+      }
+    });
   };
 
   private onUnmuteClick = () => {
diff --git a/src/components/languageChangeButton.ts b/src/components/languageChangeButton.ts
index 94adac0d..a798bb9c 100644
--- a/src/components/languageChangeButton.ts
+++ b/src/components/languageChangeButton.ts
@@ -26,7 +26,7 @@ rootScope.addEventListener('language_change', () => {
 
 function getLang(): Promise<[Config.config, LangPackString[], LangPackDifference.langPackDifference]> {
   if(cachedPromise) return cachedPromise;
-  return cachedPromise = apiManager.invokeApiCacheable('help.getConfig').then(config => {
+  return cachedPromise = apiManager.getConfig().then(config => {
     if(config.suggested_lang_code !== I18n.lastRequestedLangCode) {
       //I18n.loadLangPack(config.suggested_lang_code);
 
diff --git a/src/components/popups/newMedia.ts b/src/components/popups/newMedia.ts
index e7e97307..a0c1ab94 100644
--- a/src/components/popups/newMedia.ts
+++ b/src/components/popups/newMedia.ts
@@ -19,6 +19,7 @@ import appDownloadManager from "../../lib/appManagers/appDownloadManager";
 import calcImageInBox from "../../helpers/calcImageInBox";
 import isSendShortcutPressed from "../../helpers/dom/isSendShortcutPressed";
 import placeCaretAtEnd from "../../helpers/dom/placeCaretAtEnd";
+import rootScope from "../../lib/rootScope";
 
 type SendFileParams = Partial<{
   file: File,
@@ -30,8 +31,6 @@ type SendFileParams = Partial<{
   duration: number
 }>;
 
-const MAX_LENGTH_CAPTION = 1024;
-
 // TODO: .gif upload as video
 
 export default class PopupNewMedia extends PopupElement {
@@ -87,7 +86,7 @@ export default class PopupNewMedia extends PopupElement {
       placeholder: 'PreviewSender.CaptionPlaceholder',
       label: 'Caption',
       name: 'photo-caption',
-      maxLength: MAX_LENGTH_CAPTION,
+      maxLength: rootScope.config.caption_length_max,
       showLengthOn: 80
     });
     this.input = this.inputField.input;
@@ -150,7 +149,7 @@ export default class PopupNewMedia extends PopupElement {
     }
 
     let caption = this.inputField.value;
-    if(caption.length > MAX_LENGTH_CAPTION) {
+    if(caption.length > rootScope.config.caption_length_max) {
       toast(I18n.format('Error.PreviewSender.CaptionTooLong', true));
       return;
     }
diff --git a/src/components/popups/peer.ts b/src/components/popups/peer.ts
index 252f7f59..c0a42d9e 100644
--- a/src/components/popups/peer.ts
+++ b/src/components/popups/peer.ts
@@ -36,7 +36,7 @@ export default class PopupPeer extends PopupElement {
       this.header.prepend(avatarEl);
     }
 
-    if(options.descriptionLangKey) this.title.append(i18n(options.titleLangKey, options.titleLangArgs));
+    if(options.titleLangKey || !options.title) this.title.append(i18n(options.titleLangKey || 'AppName', options.titleLangArgs));
     else this.title.innerText = options.title || '';
 
     let p = document.createElement('p');
diff --git a/src/lang.ts b/src/lang.ts
index 2aee3f4d..077c50f3 100644
--- a/src/lang.ts
+++ b/src/lang.ts
@@ -518,6 +518,11 @@ const lang = {
   "AddMembersAlertCountText": "Are you sure you want to add %1$s to **%2$s**?",
   "AddMembersForwardMessages": "Show the last 100 messages to the new members",
   "AddOneMemberForwardMessages": "Show the last 100 messages to **%1$s**",
+  "PinToTopLimitReached2": "Sorry, you can only pin %1$s to the top in the main list. More chats can be pinned in Chat Folders and your Archive.",
+  "FiltersSetupPinAlert": "Set Up Folders",
+  "AppName": "Telegram",
+  "OK": "OK",
+  "PinFolderLimitReached": "Sorry, you can\'t pin any more chats to the top.",
 
   // * macos
   "AccountSettings.Filters": "Chat Folders",
diff --git a/src/lib/appManagers/appMessagesManager.ts b/src/lib/appManagers/appMessagesManager.ts
index 817d4b82..dbdb7731 100644
--- a/src/lib/appManagers/appMessagesManager.ts
+++ b/src/lib/appManagers/appMessagesManager.ts
@@ -438,7 +438,7 @@ export class AppMessagesManager {
       options.replyToMsgId = options.threadId;
     }
 
-    const MAX_LENGTH = 4096;
+    const MAX_LENGTH = rootScope.config.message_length_max;
     if(text.length > MAX_LENGTH) {
       const splitted = splitStringByLength(text, MAX_LENGTH);
       text = splitted[0];
@@ -2913,6 +2913,11 @@ export class AppMessagesManager {
   public toggleDialogPin(peerId: number, filterId?: number) {
     if(filterId > 1) {
       return this.filtersStorage.toggleDialogPin(peerId, filterId);
+    } else {
+      const max = filterId === 1 ? rootScope.config.pinned_infolder_count_max : rootScope.config.pinned_dialogs_count_max;
+      if(this.dialogsStorage.getPinnedOrders(filterId).length >= max) {
+        return Promise.reject({type: 'PINNED_DIALOGS_TOO_MUCH'});
+      }
     }
 
     const dialog = this.getDialogOnly(peerId);
@@ -3017,11 +3022,12 @@ export class AppMessagesManager {
     }
 
     // * second rule for saved messages, because there is no 'out' flag
-    if(message.pFlags.out || this.getMessagePeer(message) === appUsersManager.getSelf().id) {
+    if(/* message.pFlags.out ||  */this.getMessagePeer(message) === appUsersManager.getSelf().id) {
       return true;
     }
 
-    if((message.date < (tsNow(true) - (2 * 86400)) && message.media?._ !== 'messageMediaPoll') || !message.pFlags.out) {
+    if((message.date < (tsNow(true) - rootScope.config.edit_time_limit) && 
+      message.media?._ !== 'messageMediaPoll') || !message.pFlags.out) {
       return false;
     }
 
diff --git a/src/lib/mtproto/mtprotoworker.ts b/src/lib/mtproto/mtprotoworker.ts
index fd6801ea..722bd43e 100644
--- a/src/lib/mtproto/mtprotoworker.ts
+++ b/src/lib/mtproto/mtprotoworker.ts
@@ -7,7 +7,7 @@
 import type { LocalStorageProxyTask, LocalStorageProxyTaskResponse } from '../localStorage';
 //import type { LocalStorageProxyDeleteTask, LocalStorageProxySetTask } from '../storage';
 import type { Awaited, InvokeApiOptions, WorkerTaskVoidTemplate } from '../../types';
-import type { InputFile, MethodDeclMap } from '../../layer';
+import type { Config, InputFile, MethodDeclMap } from '../../layer';
 import MTProtoWorker from 'worker-loader!./mtproto.worker';
 //import './mtproto.worker';
 import { isObject } from '../../helpers/object';
@@ -99,6 +99,8 @@ export class ApiManagerProxy extends CryptoWorkerMethods {
 
   private postMessagesWaiting: any[][] = [];
 
+  private getConfigPromise: Promise<Config.config>;
+
   constructor() {
     super();
     this.log('constructor');
@@ -210,6 +212,10 @@ export class ApiManagerProxy extends CryptoWorkerMethods {
     /// #if !MTPROTO_SW
     this.registerWorker();
     /// #endif
+
+    setTimeout(() => {
+      this.getConfig();
+    }, 5000);
   }
 
   public isServiceWorkerOnline() {
@@ -597,6 +603,14 @@ export class ApiManagerProxy extends CryptoWorkerMethods {
   public forceReconnect() {
     this.postMessage({type: 'forceReconnect'});
   }
+
+  public getConfig() {
+    if(this.getConfigPromise) return this.getConfigPromise;
+    return this.getConfigPromise = this.invokeApi('help.getConfig').then(config => {
+      rootScope.config = config;
+      return config;
+    });
+  }
 }
 
 const apiManagerProxy = new ApiManagerProxy();
diff --git a/src/lib/rootScope.ts b/src/lib/rootScope.ts
index 66c485e6..9ffe1da4 100644
--- a/src/lib/rootScope.ts
+++ b/src/lib/rootScope.ts
@@ -4,7 +4,7 @@
  * https://github.com/morethanwords/tweb/blob/master/LICENSE
  */
 
-import type { Message, StickerSet, Update, NotifyPeer, PeerNotifySettings, ConstructorDeclMap } from "../layer";
+import type { Message, StickerSet, Update, NotifyPeer, PeerNotifySettings, ConstructorDeclMap, Config } from "../layer";
 import type { MyDocument } from "./appManagers/appDocsManager";
 import type { AppMessagesManager, Dialog, MessagesStorage } from "./appManagers/appMessagesManager";
 import type { Poll, PollResults } from "./appManagers/appPollsManager";
@@ -144,6 +144,14 @@ export class RootScope extends EventListenerBase<{
   public settings: State['settings'];
   public peerId = 0;
   public systemTheme: Theme['name'];
+  public config: Partial<Config.config> = {
+    forwarded_count_max: 100,
+    edit_time_limit: 86400 * 2,
+    pinned_dialogs_count_max: 5,
+    pinned_infolder_count_max: 100,
+    message_length_max: 4096,
+    caption_length_max: 1024,
+  };
 
   constructor() {
     super();
diff --git a/src/lib/storages/dialogs.ts b/src/lib/storages/dialogs.ts
index c61d0b43..db5c96f0 100644
--- a/src/lib/storages/dialogs.ts
+++ b/src/lib/storages/dialogs.ts
@@ -146,6 +146,10 @@ export default class DialogsStorage {
     this.pinnedOrders[folderId] = [];
   }
 
+  public getPinnedOrders(folderId: number) {
+    return this.pinnedOrders[folderId];
+  }
+
   public getOffsetDate(folderId: number) {
     return this.dialogsOffsetDate[folderId] || 0;
   }
diff --git a/src/lib/storages/filters.ts b/src/lib/storages/filters.ts
index 9843a27f..edf08680 100644
--- a/src/lib/storages/filters.ts
+++ b/src/lib/storages/filters.ts
@@ -182,6 +182,10 @@ export default class FiltersStorage {
   public toggleDialogPin(peerId: number, filterId: number) {
     const filter = this.filters[filterId];
 
+    if(filter.pinned_peers.length >= this.rootScope.config.pinned_infolder_count_max) {
+      return Promise.reject({type: 'PINNED_DIALOGS_TOO_MUCH'});
+    }
+
     const wasPinned = filter.pinned_peers.findAndSplice(p => p === peerId);
     if(!wasPinned) {
       filter.pinned_peers.unshift(peerId);