Authenticator token disappeared for Facebook about authenticator HOT 3 CLOSED

I do not have backup recovery codes saved.

from authenticator.

Solution is I had an encrypted backup on mac with active keychain or you have lost all keys,You should have made sure that the keys were active on mac before backing up in + you should have made sure that from the first backup onwards they were all encrypted.

from authenticator.

I'm sorry to hear this! Were there any changes to your device (a software update, a restore to a new phone) around the time you lost your Facebook token? Is there any chance you or someone else accidentally deleted it?

If you don't have an encrypted backup from before your token was lost, and you don't have backup recovery codes, you can try going through Facebook's account recovery process here: https://www.facebook.com/help/105487009541643

from authenticator.