I’m not staff. Just a regular gamer who helps out in his spare time. 
But, if I may offer a perspective as a fellow gamer, crashes are usually the result of either:
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Incompatible software. For example if you’re using a cracked game then it is incompatible with most trainers. The reason being because cracked games are no longer the original base game because they have been messed around with too much by the crackers.
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Hardware limitations. When your PC lacks the required minimum specs to run a game it causes a certain degree of problems to that PC. Your computer is designed to kill any task that is causing problems or danger to your PC (such as overheating, etc). So if your PC doesn’t meet the requirements to run both the game and the trainer your computer will kill the game, hence crash to desktop. If a game crashes because you don’t meet the specs then it’s probably for the best, forcing your PC to run something it can’t actually run will just kill your machine.
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Hardware damage. Over time hardware will degrade, because nothing was built to last forever. The average life expectancy of a PC before hardware degradation is expected to begin occurring is 5 years. You can extend this life expectancy by replacing hardware from time to time. For example, faulty RAM will cause your RAM-intensive software, such as games, to crash.
I’m sorry but I believe the staff above are correct. I know it isn’t nice to hear that the issue is likely on your end, but we don’t diagnose that just for fun.
If you’re using a cracked game then we’re not judging you. Some people do struggle to fund their gaming habit, and I know gaming can cost a pretty penny these days. But cracked games come with problems, such as incompatibilities with trainers. Keep an eye on the Deals + Giveaways area of this forum because I occasionally post free games there, some which have trainers readily available here at WeMod.
Thanks for buying pro, by the way, it helps @MrAntiFun, @REPPiN and @STiNGERR to be able to do what they do.