I can't send you a PM, so I'll just post it here:
You have simply forgotten to add the variables holding the date information to the formats:
pawn Code:
format(str, sizeof(str), "(%d/%d/%d)[%d:%d:%d] %s has left the server. (Lost Connection)", d, m, y, h, mi, s, name);
format(str, sizeof(str), "(%d/%d/%d)[%d:%d:%d] %s has left the server. (Leaving)", d, m, y, h, mi, s, name);
format(str, sizeof(str), "(%d/%d/%d)[%d:%d:%d] %s has left the server. (Kicked/Banned)", d, m, y, h, mi, s, name);