Could Ring please stop telling its users to switch to unsafe methods of authenciation? SMS is not safe anymore. Anyone reading the news already knows this. Since you fail to provide any standard methods for 2FA, email is the next best because my email provder DOES support standard 2FA protocols. Stop sending me emails to switch.
https://www.wired.com/2016/06/hey-stop-using-texts-two-factor-authentication/