Why wont RuneScape let me on?

1) You could have been banned. On runescape homepage click on appeal an offence/ban 2) Your account could be locked. On runescape homepage go to recover an locked account/recover a lost password. 3) You could have been hacked. If you set recovery questions, You could recover your account VIA recover a lost password on runescape homepage 4) The runescape servers may be down, try again later.