Scottrade accounts were migrated to Ameritrade this weekend. You can login there (Ameritrade) with your Scottrade credentials.
(BTW: if you want to turn on the L2 stream you have to "subscribe" to it under "Client Services-> My Profile -> Subscriptions)
(BTW: if you want to turn on the L2 stream you have to "subscribe" to it under "Client Services-> My Profile -> Subscriptions)