Great idea but poor results

The idea behind it is great, but for some reason it did not work on my site. I blocked the front-end and back end on a few countries, not mine of course. The cumbersome process of selecting the countries has been already highlighted so I won’t repeat other comments. Long story short, I logged-out and I was blocked out of the front end. I logged in again (the back-end worked btw..) and tested it with pingdom tools, to see if it worked in different countries. All the results were negative, access denied, where it was supposed to be accessible. I deactivated the plugin and everything is available again. My vote is based on my experience, if the plugin improved I would use it. Thanks for the hard work anyway.