FlexAppeal 2.0 · invite only
Two-factor sign-in. Open the authenticator app you added DeepFlex to and type the current six digits. They change every 30 seconds, so if the code is about to roll over, wait for the next one rather than racing it.
If a code you have just read is refused, check your device clock: a phone a minute out of step produces codes the server will not accept. Five wrong attempts lock the account for 15 minutes, and the message you get back is the same either way, so a failure never reveals whether an email address exists here.
There are no backup codes and the secret cannot be recovered. If you lose the authenticator, the account has to be made again from the command line, which is also the only way one is created: there is nothing to register here.