diff --git a/src/assets/localization/fallback.strings b/src/assets/localization/fallback.strings
index cf78b4034..1ca67d2e9 100644
--- a/src/assets/localization/fallback.strings
+++ b/src/assets/localization/fallback.strings
@@ -2446,6 +2446,7 @@
 "TitleAgeCheckFailed" = "Age Check Failed";
 "TitleAgeCheckSuccess" = "Age Check Success";
 "ButtonAgeVerification" = "Verify My Age";
+"MiniAppUnavailableError" = "Mini app is not available";
 "GiftRibbonPremium" = "premium";
 "NotificationGiftsLimit2_one" = "You already sent **one** of these gifts, which is the limit.";
 "NotificationGiftsLimit2_other" = "You already sent **{count}** of these gifts, which is the limit.";
diff --git a/src/components/modals/ageVerification/AgeVerificationModal.tsx b/src/components/modals/ageVerification/AgeVerificationModal.tsx
index 606b22828..91443d582 100644
--- a/src/components/modals/ageVerification/AgeVerificationModal.tsx
+++ b/src/components/modals/ageVerification/AgeVerificationModal.tsx
@@ -1,4 +1,3 @@
-import type { FC } from '../../../lib/teact/teact';
 import { memo } from '../../../lib/teact/teact';
 import { getActions, withGlobal } from '../../../global';
 
@@ -20,27 +19,19 @@ export type OwnProps = {
 };
 
 type StateProps = {
-  verifyAgeBotUsername?: string;
   verifyAgeMin: number;
 };
 
-const AgeVerificationModal: FC<OwnProps & StateProps> = ({
+const AgeVerificationModal = ({
   modal,
-  verifyAgeBotUsername,
   verifyAgeMin,
-}) => {
-  const { closeAgeVerificationModal, openChatByUsername } = getActions();
+}: OwnProps & StateProps) => {
+  const { closeAgeVerificationModal, requestAgeVerification } = getActions();
   const lang = useLang();
   const isOpen = Boolean(modal);
 
   const handleVerifyAge = useLastCallback(() => {
-    if (verifyAgeBotUsername) {
-      openChatByUsername({
-        shouldStartMainApp: true,
-        username: verifyAgeBotUsername,
-      });
-    }
-    closeAgeVerificationModal();
+    requestAgeVerification();
   });
 
   const handleClose = useLastCallback(() => {
@@ -86,11 +77,9 @@ const AgeVerificationModal: FC<OwnProps & StateProps> = ({
 
 export default memo(withGlobal((global): Complete<StateProps> => {
   const appConfig = global.appConfig;
-  const verifyAgeBotUsername = appConfig.verifyAgeBotUsername;
   const verifyAgeMin = appConfig.verifyAgeMin || VERIFY_AGE_MIN_DEFAULT;
 
   return {
-    verifyAgeBotUsername,
     verifyAgeMin,
   };
 })(AgeVerificationModal));
diff --git a/src/global/actions/api/bots.ts b/src/global/actions/api/bots.ts
index 5e4fa6b4b..709c5df4f 100644
--- a/src/global/actions/api/bots.ts
+++ b/src/global/actions/api/bots.ts
@@ -703,6 +703,42 @@ addActionHandler('requestWebView', async (global, actions, payload): Promise<voi
   }
 });
 
+addActionHandler('requestAgeVerification', async (global, actions, payload): Promise<void> => {
+  const { tabId = getCurrentTabId() } = payload || {};
+  const { verifyAgeBotUsername } = global.appConfig;
+
+  if (!verifyAgeBotUsername) {
+    actions.showNotification({
+      message: { key: 'MiniAppUnavailableError' },
+      tabId,
+    });
+    return;
+  }
+
+  const chat = await fetchChatByUsername(global, verifyAgeBotUsername);
+  global = getGlobal();
+  const bot = chat && selectUser(global, chat.id);
+
+  if (!bot?.hasMainMiniApp) {
+    actions.showNotification({
+      message: { key: 'MiniAppUnavailableError' },
+      tabId,
+    });
+    return;
+  }
+
+  const theme = extractCurrentThemeParams();
+  actions.requestMainWebView({
+    botId: bot.id,
+    peerId: bot.id,
+    theme,
+    shouldMarkBotTrusted: true,
+    tabId,
+  });
+
+  actions.closeAgeVerificationModal({ tabId });
+});
+
 addActionHandler('requestMainWebView', async (global, actions, payload): Promise<void> => {
   const {
     botId, peerId, theme, startParam, mode, shouldMarkBotTrusted,
@@ -717,7 +753,14 @@ addActionHandler('requestMainWebView', async (global, actions, payload): Promise
   if (checkIfOpenOrActivate(global, botId, tabId)) return;
 
   const bot = selectUser(global, botId);
-  if (!bot) return;
+  if (!bot) {
+    actions.showNotification({
+      message: { key: 'MiniAppUnavailableError' },
+      tabId,
+    });
+    return;
+  }
+
   const peer = selectPeer(global, peerId);
   if (!peer) return;
 
@@ -748,6 +791,10 @@ addActionHandler('requestMainWebView', async (global, actions, payload): Promise
     mode,
   });
   if (!result) {
+    actions.showNotification({
+      message: { key: 'MiniAppUnavailableError' },
+      tabId,
+    });
     return;
   }
 
diff --git a/src/global/types/actions.ts b/src/global/types/actions.ts
index 93a9a0e73..9f62b61e7 100644
--- a/src/global/types/actions.ts
+++ b/src/global/types/actions.ts
@@ -1149,6 +1149,7 @@ export interface ActionPayloads {
   closeDeleteAccountModal: WithTabId | undefined;
   openAgeVerificationModal: WithTabId | undefined;
   closeAgeVerificationModal: WithTabId | undefined;
+  requestAgeVerification: WithTabId | undefined;
   setAccountTTL: {
     days: number;
   } & WithTabId | undefined;
diff --git a/src/types/language.d.ts b/src/types/language.d.ts
index 43aa656c7..c088b0626 100644
--- a/src/types/language.d.ts
+++ b/src/types/language.d.ts
@@ -1797,6 +1797,7 @@ export interface LangPair {
   'TitleAgeCheckFailed': undefined;
   'TitleAgeCheckSuccess': undefined;
   'ButtonAgeVerification': undefined;
+  'MiniAppUnavailableError': undefined;
   'GiftRibbonPremium': undefined;
   'PremiumGiftHeader': undefined;
   'PriceInStars': undefined;