Hello Rey,
As you have stated, yes, you were banned for propkilling not only once, but twice including in a sit. You claim to have learned from your mistakes, however, according to the admin who banned you, you were warned for propkill 5 months before this ban aswell. This, and the fact you tried to evade the ban doesn't really tell us you have learned from your mistakes, and the chances of you doing someting similar in the future is likely, but, I hope I am wrong. Maybe we see you on the server again, and if so, I hope you are true to your word. Good luck on the appeal.