Finally! I found out how to make it work if you're using Windows 10 (idk how about 8)!
Go to hack's .exe properties and enable compatibility mode, select Windows 7, and enable Run as administrator. Launch BF3, go into any server (no PB recommended), and while you're in deploy menu launch hack. Select option you want and enjoy. If round ends you don't have to re-select options or re-launch hack.