Locked accounts: Tell users using OAuth or SSO what to do to unlock their account
Summary
It can be common for a user to end up on the regular sign in screen, attempt to sign in, fail, have their account locked.
After, they remember or attempt to sign in via OAuth or SSO. They sign in successfully through that service, but their account is locked and are not given instructions on what to do.
Proposal
Notify user their account is locked and how to unlock it.