Website should be displayed to admins only

Thank you for the great plugin.

I know you can restrict access by role in the Pro version, but I believe in the free version the website should be visible to admins only by default, not all logged-in users. Some sites (like mine) have front-end user registration and stuff, and this plugin becomes unusable on such sites.

Hope to see this fix implemented.

https://www.ads-software.com/extend/plugins/ultimate-maintenance-mode/