What are you talking about?
all F1 key do is to activate the trainer
are you having trouble turning on the trainer or using the cheats?
Damn you beat me to it, was wondering the same thing, what trainer are we talking about and have you gone through the trouble shooter.
Are you using Internet explorer 10 / 11 if so you might have to update it or use another browser, atleast that has solved issues for some people.
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* Priority support with any problem