Hi Jurko,
Firstly I need to apologize for not answering you sooner, I thought that if somebody would open a support thread for my plugin, I would get a email ping or something, this didn’t happen!
The plugin doesn’t block on all or specific pages right now, it is mostly designed to prevent registrations, logins and comments while using a Proxy and optionally VPN, but what you want shouldn’t be too difficult to implement, at least the blocking for the entire website thing, specific pages would be harder to do but it is something I will look into!
Again, Apologies for the slow response!