From the trainer's instructions:
F6: Invisible to Zombies - toggle on and most zombies ignore you or do not attack.
Are you attacked by all zombies or just certain ones? Are you playing on a private server as the team leader all by yourself?
Requesting an option doesn't mean that your request is automatically put up for voting/funding. It needs to be approved by an admin first.
You have to turn off no reload first, or best to have it off until you load into the game and have your main and secondary loaded then hit num 5 to have no reload. If you load into the game with num 5 activated you will keep reloading