Designers might disable Maintenance Mode in WordPress for several reasons, including:

• Site Launch or Updates: After completing updates or changes, designers disable Maintenance Mode to make the site live and accessible to users.
• Testing and Debugging: Designers might need to test changes or debug issues in a live environment, which requires disabling Maintenance Mode temporarily.
• Client Review: Before the final handover, designers may disable Maintenance Mode to allow clients to review the site and provide feedback.
• Public Access: To provide access to specific users or stakeholders who need to view or test the site before it officially launches.
• Performance: Sometimes, Maintenance Mode can affect site performance or cause issues with certain functionalities, prompting designers to disable it to address these concerns.

Under General > Advanced Settings you can set maintenance mode page for your website and enable/disable lazyload image.

1. Maintenance mode – Create a page and set it as maintenance mode
2. Lazyload – Enable/disable lazyload images on scroll

• Maintenance Mode – Go to Dashboard > Pages and create your custom page and add your content in page and publish it. Then in Maintenance mode settings select your custom page, Now all of you no-logged in visitors will redirect to your custom page from any pages.
  
  
• Lazyload – Enable lazyload feature for all images and browser will load images on page scroll.

XTRA theme have built-in maintenace mode feature and you can create a page and assign it for maintenance mode. Go to Dashboard > Pages > Add New and like below shot create your maintenance or coming soon page and from page settings, disable header and footer.

Go to Theme Options > General > Advanced and find Maintenance mode option and set your page.

• Countdown  – When you are creating a custom page for maintenance mode, you can any elements via page builder to your maintenance page.