[Gammix]

pawn Код:

public OnPlayerText(playerid,text[])
{
       new string[128], name[MAX_PLAYER_NAME];
       GetPlayerName(playerid, name, sizeof name);
       if(PInfo[playerid][pAdminDuty] == 1)
       {
              format(string, sizeof(string), "Administrator %s: %s", name, text);
              return SendClientMessageToAll(COLOR_GOLD, string);
        }
   
       if(PInfo[playerid][Level] > 1 && text[0] == '.')
       {
               format(string, sizeof(string),"[ADMIN CHAT] %s[%d]: %s", name, playerid, text[1]);
               return MessageToAdmins(COLOR_MEDIUMSEAGREEN, string);
        }
        return 1;
}

Its because the callback returns 0. Just replace with 1 like this^

EDIT: i have edited the code, basically removed string Prefix because there is no need for it. You directly plot it it ing the main string manualy. And some simplifications!