Ending free tier/membership

I am about to end our free membership tier. I’ve turned it off under Memberships, which means it isn’t available on the sign-up pop-up. However, what’s the best way to handle existing free members, if they don’t upgrade?

Delete them in Ghost? If I do, and they decide to sign up again, what happens? Can they?

Since they are free, there’s nothing to do in Stripe, right?

Just want to do this the best way so I don’t cause a problem later.

B.

If you want to remove access from your site completely then you’d need to delete the members. They would be able to sign up again.