Firebase2 in its current version (2.4.2) is not yet compatible with Firebase SDK v3, and all projects created with the new Firebase console are only accessible with calls comaptible with SDK v3.

You want to create your Firebase backend in the legacy console www.firebase.com first, and then migrate to the new console.

This is documented in this closed issue of the angularfire2 github: https://github.com/angular/angularfire2/issues/189