Welcome to the community. 
This is a 32-bit game, because it only requires 2GB of RAM.
- 32-bit = Software that uses less than 4GB of RAM.
- 64-bit = Software that uses 4GB of RAM or more.
The game last updated April 2021 and the trainer was also last updated April 2021. So there should not be any reason for another update.
See here, which sounds similar to the error message you’re getting: “These cheats were made for the 64-bit version of the game, you are running the 32-bit version” - Support - WeMod Community.
And ensure the game is legitimately purchased from Steam, as opposed to elsewhere or cracked/pirated.