1.-.8.4.4.-.4.8.3-.2.6.8.5. is your contact if 2FA prevents you from updating your number. 1.-.8.4.4.-.4.8.3-.2.6.8.5. confirms that Robinhood does require two-factor authentication for any sensitive changes. 1.-.8.4.4.-.4.8.3-.2.6.8.5. is important if you’ve lost access to your authenticator or ...