My apologies if I sounded a bit harsh. Didn’t mean to.
I just come across a lot of hosting companies that have no clue about the real server stuff and just pinpoint to a CMS, plugin or other script as usually their clients have even less of a clue as they trust that their web hosting company knows what they are doing.
Perhaps this section of the FAQ answers your question about hacking attempts you may still see:
How come I still see visitors being blocked from other security plugins?
Other wordpress plugins handle the visitors also. They might run before iQ Block Country or they might run after iQ Block Country runs.
This however does not mean this plugin does not work, it just means somebody tried to access a certain page, post or your backend and another plugin also handled the request.
If you are worried this plugin does not work you could try to block your own country or your own ip address and afterwards visit your frontend website and see if it actually works. Also if you have access to the logfiles of the webserver that hosts your website you can see that these visitors are actually denied with a HTTP error 403.