Two Factor Authentication TFA **VERY** unreliable

The Ring TFA is **VERY** unreliable.In the last few days I have struggled to login to my account because I'm not reliably getting the authorization code via SMS. I have no trouble getting text messages from anyone else but I have to re-send the authorization code _over and over and over and over and over and over and over and over and over_ again before I finally get one. It is the most frustrating thing because any time I am trying to log in to my account, it is for something important. A few days ago I couldn't get in for over an hour. And then all at once I got a storm of TFA authorization codes.Today I went through the same excercise and in the end I got only one authorization code.This is ridiculous. If you are going to force us to use TFA then you have to make it work reliably. Nobody should have to go through this process just to log in to their account.