Update: I e-mailed
[email protected] yesterday to ask why our Model 3 hasn't received FSD Beta yet. I received an automated reply yesterday, but today I received a reply from someone on the team, who told me we don't have enough miles on Autosteer yet (we have 64, we need 100). I've been in the Beta queue for months now so I'm surprised that we haven't racked up 100 miles, but at least I got the response and now I know what we need to do.
The only information I provided was the last 6 digits of my VIN. Apparently that's all they need.