idea is great but does not work

Hi Guys

I like the idea, I like the interface but it works 50% of times. Even IP specified in the black list would still be able to access. I have tried it extensively for days and had to deactivate it this morning as I was once again thrown out of my frontend. The other day he prevent me from accessing my backend, which is kind of annoying, I tried with 7 VPN servers from USA to Canada, through Netherlands, etc. it does not work. So I had to tweak my DB in order to gain access again.

It just does not work. Until a major upgrade, do not waste your time here.

I have no cache plugin, using WP 3.9.1, and have updated the IP database 1 billions times.