We're looking into it - please stay tuned.
The version number is wrong but the trainer is up to date (though a trainer with correct version number will be posted later). Super attack speed is working fine but the more characters you have the less visible the effect of it will be. Monsters have to walk a bit and game needs to find an available character to attack this monster.
The best way to see the effect of attack speed cheat is when you have only one character and there are multiple enemies on your screen at the same time.