Games have differences in their engine code depending on where you get them from.
This is why each store version needs its own separate trainer.
It is also why no trainer provider anywhere on the Internet deliberately makes trainers for cracked games. Doing so would not only be extremely uneconomical, but it will also turn game developers against the legal cheating communities for supporting illegal activity against their intellectual property. Then they will either sue or find ways to make trainers obsolete forever.
Read here: No support for cracked games?.