How it works
Off by default. When you turn it on, people sign up by themselves on the page of the account, pay with Stripe and manage their subscription in the Stripe portal. The tools of VEFdocsKit stay free for every account; the Pro functions open with an active subscription.
Who keeps access
The people who manage the site keep their access, and you can give a free access to an account. The Subscribers tab lists each account and its state.
Before going live
The test and the live keys of Stripe are kept apart: try everything in test mode first. A payment that is refused leaves a grace period before the access stops.