I started switching to fastmail due to their economical family plan but then they changed plan structures to where that is no longer available and the new plans

I started switching to fastmail due to their economical family plan but then they changed plan structures to where that is no longer available and the new plans were all a lot more expensive for a family. I was grandfathered in (I signed up just before the change), but won't start using a service on a deprecated plan. It was to bad because it seemed very good for the week or so I played with it.