Welcome to community, as always make sure you read FAQ and get familiar yourself with trainers.
Please explain issue as best as possible logic response, like you saying "i have everything done" so therefore i assume you have followed properly instructions on first page and assuming you using correspondent game version with trainer version? "it wont activate at all. " again, please mention what exactly doesn't work?
I got the new trainer to activate, looks like everything works, but.... the increased lagging when running the trainer makes the game unplayable with it activated. I am now playing 7DTD without the trainer and getting better at it.
I'd also like a new update for this. So the Trainer works but with some issues. The only cheats I see available are the Activation of the trainer, infinite health, food, water, stamina, fly mode and stealth. When activating infinite health, after killing a zombie or 2, they become unkillable just like the player, perhaps an ingame built defense system for cheaters who may have by passed the anticheat? At anyrate idk if that can be fixed, but if this ever does get updated anytime soon is there any possibility to get infinite weapon durability/stamina and infinite skill points?