A few years back, I got locked out of my primary gmail account due to a 2 factor authentication SNAFU. I was never able to recover it. I tried to go through the appropriate support channels more than once. Filled out extensive forms, even identified recent emails like they asked, to no avail. It was very disappointing, considering I had spent a good amount of money purchasing apps/ games etc. with that account. What…
2 factor authentication (w/ security tokens, mobile "apps" etc.) comes with an inherent risk of getting locked out of stuff. Most of the time you can mitigate that risk by generating "recovery" codes in advance, but it's still something to be aware of.
As a dutiful user I obliged, and downloaded the authenticator app. I think it gave me 10 one time recovery codes, but of course I didn’t back them up externally :)
I was having some performance issues with my Samsung phone at the time, and a couple days later, did a factory reset. Then when it came back on and I tried to log into my google account, my stomach sank to the floor when I realized I could not get in without the authenticator app.
That was that. Everything gone. What an idiot :) Couldn’t even get on through a computer without the stupid codes I could no longer generate. Answered all the questions, identified specific emails, personal info etc. Google was not impressed.