> Please login to your Joomla admin dashboard
> Please go to the Global Configuration from the left side menu
> Please go to the Site tab from the top side of the page
> Please go to the Site Settings > Offline Message setting and you can select from below options
– Hide
– Use Custom Message
– Use Site Language Default Message
> Please click on the Save button to save the settings
Offline Message: Hide
Offline Message: Use Custom Message