I was locked out of my FB account for no reason a couple months back. The option I had was to send myself a text message but after a dozen tries over a couple weeks and never receiving the message I gave up for awhile. I didn't want to upload my ID to some unknown person. 3 weeks later I tried again and this time I got the SMS message and was able to get back in. I took a back up of my account as well just in case.