Google-free accounts (sign in with email+password & use Apple Calendar alone)

I love using Amie, but I’m currently signed in with a temporary Google account and would really appreciate the ability to:

• Switch to email/password authentication. Please let me convert my existing Google‑based login to an email address and password so I can delete the linked Google account altogether.

• Use Apple Calendar exclusively. The Apple Calendar integration is a great start, but since it’s still in beta I can’t fully disable Google Calendar. It would be fantastic if I could opt out of Google Calendar entirely and rely only on Apple Calendar for my scheduling.