vs code asking for authorization code in changing Firebase account during installation

Question

? Which Firebase account would you like to use? 
> [Login in with another account]
> ********* (other Firebase account logged in)

? Which Firebase account would you like to use? [Login in with another account]
? Enter authorization code:

Where do I get the authorization code?

Answer 1

I figured it out! you should first run

firebase login

then

firebase init

before running

ng add @angular/fire

It is a step-by-step process.