Coming soon applied to every page

This is, in my opinion a common problem im facing with most coming soon or maintance WP plugins.

I cannot apply the “coming soon” mode to a Single page, and leave visible to pubblic those instead in want to show.
Basically when u activate this kind of plugins the effect is applied to tentire site, which i find it quite wrong for SEO this lackign option.

Is there any way to solve this prolem? In my case is pretty urgent too…

https://www.ads-software.com/plugins/coming-soon-maintenance-mode-ready/