I tried yesterday to extend my AdGuard subscription on my 2 computers for another year. I logged into the website completed all of the information on the credit card, email and state. It turns out that their fraud engine wants to see a correlation between IP and the listed state. I operate with a VPN in CA but live in TN which is my billing address of the credit card which I assumed they wanted. They wanted the state of the IP I was using without giving any warning. I thought I did everything right like valid credit card, requested same license number after logging into the site with my pass word but they rejected my application for no given reason.