You didn't look hard enough, this has been answered many times.
Logging in to an account via Tor will not get it banned or anything however if you create an account over Tor or a dodgy IP, you may be asked to pay a small fee to create the account. It's only the sign up IP that matters.
Ok thanks so how does someone get pemabanned for evading a ban do you know? This is what i am asking but finding it difficult lol, Person A, gets banned for 30 days on ip x then Person B, uses that same ip x to create a new account or logs in with a old shill, does person A now get pemabanned for evading the original ban? You have told me no as far as i can see. So how does someone get pemabanned?