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I am in the same position as you, my phone crashed, I had to factory reset, and I don't have qr code or key for google authenticator. I can't sign in my bitfinex account. I send them a ticket. Any new information would be appreciated. Did you manage to sign in after you send them the ticket?
I was once in the same situation with another exchange - but I assume it should be resolved in a similar manner at Bitfinex.
I had to do two things in order to reinstate my account access:
1. Sign a message with my deposit address (it is certainly helpful, if you have deposited from a certain address often in the past)
2. Wait for roughly a week (a kind of "cool-down" period)
If you are verified at Bitfinex it might also be possible to provide certain documents to prove that you are indeed
the legitimate owner of the account.