Thank you for taking the time to make this appeal. In most circumstances you would need to give two warnings in text chat before you are allowed to kill someone for blocking a door, although given that door blocking itself is now against the rules i feel like that could be changed. After talking to the staff member who punished you we have come to the conclusion that the warning will be removed. In this situation the blocking rule overlaps with the valid KOS reason of preventing the diamond block from reaching the tower and because of that we feel that you should not have been warned for not warning in text chat as there is a good case for you not needing to warn at all. It would be kind of harsh to expect players to stand there and type to someone to stop blocking as they are a massive target holding a game winning item. This appeal has been