Customize blocked user message?

Right now if a blocked user attempts to log in I get “There was a problem with your log in: user is blocked [error code: unauthorized]”

I’d like to customize that, but can’t see a way to do it. The wordpress settings for Lock config link here: https://auth0.com/docs/libraries/lock/lock-configuration but there are no settings for blocked users there.

I’ve found references to configuring this in various places, but none seem to work. Has this functionality been removed?