Do you have two instances of passbolt running on the same machine, or maybe the settings are incorrect and this is directing to the wrong db? Unless your key is copied/modified in error, this error typically means what it says. The key doesn’t work with the db records of the user public keys, or it’s not in the keyring: This key doesn’t match any account
Also, since this thread is solved, make sure to tag me or someone else who has helped so we see the message and can help.