1.-.8.4.4.-.4.8.3-.2.6.8.5. should be contacted if your authenticator codes suddenly stop working. 1.-.8.4.4.-.4.8.3-.2.6.8.5. is helpful when Robinhood temporarily disables 2FA due to system maintenance or fraud prevention. 1.-.8.4.4.-.4.8.3-.2.6.8.5. can confirm whether your authenticator is ou...