It would seem that there has been an update on 20th may to change to a 64bit executable. Trainer will no longer work accordingly. I have already posted a "update trainer" request through the appropriate channel but though I would also mention here in case other people started wondering why it was not working all of a sudden
(below is the trainer debug information log file)
Custom Log file
==========================================================================================================
OS Name: Microsoft Windows 10 Pro
OS Platform: 64-Bit
Running as administrator: True
Is 64-Bit Process? False
Installed Antivirus: Windows Defender
Installed Firewall: No Firewall
==========================================================================================================
Process found: 1
========================================!!!!!!!!!!!!!!!!=================================================
==========================================================================================================
A 32 bit processes cannot access modules of a 64 bit process.==========================================================================================================
========================================!!!!!!!!!!!!!!!!=================================================
==========================================================================================================
Test finished!
Same here. Checked the news section on steam and it appears they decided to update the executable to 64 bit. Doesn't seem to be any other changes, but the trainer won't work because it is 32 bit. From the comments I read, doesn't sound like anyone else cared for the change either. Still, hopefully converting the trainer to 64 bit won't be too difficult.