From Uncode 2.3.0, you can find the Redirectoption, useful to create a Coming Soon or Maintenance Mode page, inside the tab Theme Options → Extra → Redirect Page.
The redirect option allows you to redirect all pages of your website to a specific page. There may be times when you might need a temporary page (a Maintenance page, or a Coming Soon page) in your site, and need to hide all other pages from the public.
Thanks to Redirect all not-logged users will be redirected to a specific page of your choice, while the logged admin can access all the pages.
After activating the option Activate Page Redirect to ON, a new option will toggle. This new Redirect Page option is where you can select the page to redirect to.
Note: The new redirect page will not have a menu or a footer.