It might just be me but I have the DLC and I have tried both the main game and DLC trainers with no luck. both are in the binaries directory with the .exe..
The base game got updated (Denuvo Anti-tamper was added among other things) and this effects the DLC Mooncrash too.
Please file a report for the base game here -> Link and for Mooncrash here -> Link
I just ran the trainer and it said trainer activated, but cheats don't even work during gameplay.
Delete trainer and all files in
C:\Users\USERNAMEHERE\AppData\Local\Temp
C:\Users\USERNAMEHERE\Cheathappens\Work
C:\Users\USERNAMEHERE\AppData\Roaming\Cheat Happens\0x90
Reboot PC to clear excess memory, get a fresh copy of latest trainer and
make sure trainer in is folder excluded from virus scans. Empty quarantine folder if needed.
C:\Users\USERNAMEHERE\Cheathappens
may need to be added to exclusions as well. Run trainer as admin and try again.
Anti-virus help page. Link