I've been re-playing an old favourite game, Mass Effect 2 and could not get any of the more recent cheats to work. Many crashes. As a last resort I tried downloading a very old cheat for the retail version, one that was technically not made for Windows 10. (only valid up to Windows 7) This old cheat worked BEAUTIFULLY. Clearly, my old retail disc required an older cheat but what impressed me no end was that it still worked with Windows 10. I'm just majorly impressed again with this site and its programmers. HAT OFF, GENTLEMEN. (and ladies, too if there any lady programmers!!!!)
Your trainer workes because it's free, it's not really the trainer's compatability itself with the OS it's the trainer authentication method.
Hopefuly all of the older trainers will become eventually free.