You can make an appeal here : https://spawnpk.net/forums/index.php?/forum/25-appeal-an-offense/
Additionally, use the following format:
•The punished username:
•The time/date you were punished:
•The staff member who punished you:
•The punishment you received (Ban, ipban, UIDban, mute,...):
•The rule you broke to be punished:
•Why should you be unpunished:
•Other information:
Good luck!