[lin3ar]

you have to give every person there own warning cant just warn everyone for 1 persons problem

No we don't. One person's offense can and will often serve as a warning to everyone on the server. The MOTD is also there - though it doesn't explicitly say, using !block in a disruptive manner is griefing and will result in punishment.

if you are caught abusing !block again, expect longer bans.