1. Login into Plesk Panel.

2. Click on the "Subscriptions" button on the left side of the screen as marked in the image.

3. Click the "Subscriptions Name" as marked in the image.

4. Select the "WordPress" tab at the right side of the screen as marked in the image.

5. Click on the "Maintenance mode" button at the right side of the screen as marked in the image.

6. Maintenance mode is enabled successfully as marked in the image.
