Facebook persistent menu not showing in Messenger (chat bot)

Question

I'm trying to develop Messenger bot on NodeJS, that would:

1. Create persistent menu
2. Postback message replies

The issue I'm facing is that the persistent menu only showing for myself (on Desktop and Mobile), but not for anyone else. Tried different accounts, devices, browsers - persistent menu not showing for anyone besides myself. App is running on Heroku

So far, I've tried almost everything I've found in stackoverflow, including:

1. Made sure FB App mode is Live (not in Development)

2. Message permissions (including pages_messaging) are granted/subscribed

3. Get started button have been set up

4. Tried replacing /me/ in with FB Page ID

5. Made sure FB Token and Verify Token are correct

6. Tried removing persistent menu and started over

let setupPersistentMenu = () => {
    const menuPayload = {
      get_started: {
        payload: "GET_STARTED_PAYLOAD",
      },
      persistent_menu: [
        {
          locale: "default",
          composer_input_disabled: false,
          call_to_actions: [
            {
              title: "First menu item",
              type: "postback",
              payload: "TEST_PAYLOAD",
            }
          ],
        },
      ],
    };
    request(
      {
        uri: "https://graph.facebook.com/v17.0/me/messenger_profile",
        qs: { access_token: process.env.FB_PAGE_TOKEN },
        method: "POST",
        json: menuPayload,
      },
      (err, res, body) => {
        if (!err) {
          console.log("Persistent menu have been set up!");
        } else {
          console.error("Unable to set up persistent menu:" + err);
        }
      }
    );
  };