This issue has been resolved and all affected accounts have been restored.
Posted Dec 13, 2018 - 17:37 PST
We have been working overnight to restore access to accounts and options trading. Nearly all accounts have been restored and we are working hard to finish this for everyone affected. We continue to appreciate your patience and understanding.
Posted Dec 13, 2018 - 06:09 PST
This incident affected: Overall System (Overall System).