If you are currently working on your website and you don’t want people who visit it think that it is out of service permanently, you need to invest in a way of displaying the appropriate message. The pages that are usually displayed when WordPress stuck in maintenance mode are error ones, such as 403, 404 or 503.
Visitors tend not to come back to the respective website if they notice that it doesn’t currently work. Considering this aspect, you may need to find ways to let the visitors know that you are working on the website and it will be republished soon.
In this sense, wpDataTables team believes it is best to learn how to unpublish a WordPress site until the maintenance mode is over.