Problem Description

We have an AI app that we are making (React front end, Firebase/Flask backend). We need to have a sign up authentication process like OpenAI's ChatGPT, where the user gets a verified email and phone number. We have mostly implemented it, but we're running into some issues, as the guy working on it hasn't done it before. We need someone who is super competent in multi-factor authentication/OAuth to help fix what's wrong in our implementation.

Currently, we have to enter a 2FA code every time we log in, which we don't want. We just want a single sign up authentication from email and phone.

We have already built out the screens for this, and have it mostly working with Firebase. But we need some help finishing the feature and only having it go on sign up, not on log in.

Acceptance Criteria

Working multi-factor authentication: email and phone verification that ONLY does it via sign up, not via login.
Connecting to our React front end