If the option for a ban appeal doesn't shows for you, that more than likely means you landed on a banned IP. That happens a lot with people who try using VPNs, since those services often have been used repeatedly to break our rules and try to get around bans. So, while you personally didn't do anything to earn a ban directly, your account still tried to use banned means to log in - again, bans always have a reason. On this case you should send an email to
[email protected] instead and, if that was really the case, your ban will be lifted. Do note that even if those might be dealt with faster, they are still checked, so being banned for something else and trying to send an email to claim you're on a banned IP isn't going to work - or leave you with a good image on serious appeals.