Yes, I did that, I'm used to CH trainers, I'm currently playing Evil Within and NFS Rivals using CH Trainer on the same machine (with Windows 10), and they are working fine. Only BF: Hardline I'm not able to use it, it says "Game not found", and if I press F1 there's no sound "Trainer Activated", or even "On" when I press a numpad key.
Is that only happening with me? I'm using windows 10 (x64) and origin version of the game.
you might have tried this but I have multiple screens and learned I have to alt+tab out of the game and press F1 to get it to activate for me. Also you have to select your options then also.