Once the app is updated, you will be asked at the next app start. You can either...

		smarnach on April 25, 2023 \| parent \| context \| favorite \| on: Google Authenticator now supports Google Account s... Once the app is updated, you will be asked at the next app start. You can either choose a Google account to sync your TOTP secrets to, or you can continue without a Google account, in which case your secrets won't be synced.

Thanks for the very informative comment.