Access setting means that who user can access or not. In this setting you can set IP and user who accessible. You can remove ip and user. Set your entire website for maintenance mode.  You want only separate page for maintenance mode. You can do using Landing Page Mode.

Go to => Webriti Coming Soon Pro => Access Settings

  1. Access By IP Address -> Add IP Address for the user to access the regular site without the login.
  2. User Whitelist-> Add User to access the regular site after login.
  3. Landing Page Mode -> Only display the coming soon page on one page of your site and use it as a landing page. Select Entire site option if you want the coming soon page to be displayed on your entire site.