Ionic2 Migration - User Id is Null

I just migrated to Ionic Auth and set up according to the docs (

The only problem is that the in my app is null, which is required to perform the function save a user. The old User.Ionic.anonymousId() method doesn’t work any longer.

ionic.Auth.signup() does work and the user shows up in my backend with an Id, but I can’t seem to retrieve that in anyway.

Any help would be greatly appreciated.